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Reviews for P.I Performance Improver (API)



 P.I Performance Improver (API)

Product Reviewed: Gasoline Fuel Additives
Current Rating: 4.91 out of 5 stars
Votes & Reviews: 371 vote(s) and 230 user reviews.


A
Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by mobilemotormedic: space

NOT snake oil!

Hey! This stuff works! I'm able to monitor multiple points on engine performance as I'm driving. I can see the process of cleaning dirty injectors as I'm traveling down the road, and it does as advertised.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dan: space

All fuel systems should be cleaned.

All fuel systems should be cleaned from time to time as preventative maintenance. No matter how good your fuel is your system can get various deposits throughout it thus negatively affecting the fuel systems performance and fuel milage. This product lived up to its claims in my vehicle and will be used as needed in all of my vehicles.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Devolm: space

I'm going to buy more

I'm very happy with this product and will ordering more soon

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a
specific process that tracks purchase history.Reviewed by Subie Speedy: space

Addding performance to my Cars

I've been using AmsOil synthetic oil and oil filters for a while now on my cars and also add the P.I. gas additive now and then just to give it a boost. I noticed using the PI additive is much better than other similar products and I don't have to use them too often. Once or twice a year helps keep the cars performing.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Charlie TUNA: space

Great product

Does what it says on the bottle!! Great product.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mikey: space

I have used this product for many years...

I have used this product for many years in all of my cars, trucks, and motorcycles. During that time I have never experienced a fuel-related problem. I get flawless engine performance, increased fuel mileage, and NO trips to the repair shop for dirty fuel injectors.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by SHUZAAM: space

Best stuff you could buy.

Simply put it in your tank, fill it up with proffered gasoline, and drive off.
Cleans your system and improves mpg' garunteed. ITS ON THE BOTTLE.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by AcuDoc: space

I would buy this product again

Boosted MPG

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by AcuDoc: space

I would buy this product again

Boosted MPG

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by don't have one: space

PI Performance Improver

The product work as advertise nothing special, didn't see any great performance.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by none: space

PI Performance Improver

The product work as advertise nothing special, didn't see any great performance.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by One Crank to Another: space

Keeps the old beater out of the shop

My old truck has needed new injectors for a few years, but the repair costs more than the vehicle. PI clears the check engine light and literally gets it firing on all cylinders again.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ron906: space

Keeps fuel for my Olds fresh.

I use this product all year in my two cars and truck. It keeps my fuel injection clean also the carb on my Olds. Great product.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ZH: space

Great product

Great product, really makes a difference in restoring engine performance.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ZM: space

Great product

Great product, really makes a difference in restoring engine performance.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by wtrbxr: space

Works just as advertised

Used this in my 1999 ford f150 with 239,000 miles. Helped with a hard starting issue and seemed to smooth out my idle a bit. When I use this consistently my truck does not knock and ping on regular unleaded.

Will be using more consistently from now on.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and
submitted their review through a specific process that tracks purchase history.Reviewed by Chi: space

Would buy again and again

Great product

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by LGC driver: space

only use this product in my vehicles

Pour it in, fill the tank and go. Does everything else. I treat my gas every 7000 miles. No issues ever

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dg: space

Great product

Just keep using this product because it works

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by GRN: space

It works

I can see an increase in mileage.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by mm: space

I use this product regularly

keeps my truck running great, cleans my fuel injectors improves my gas milage.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by cam50cam: space

Great product

I recently added this to my 2016 Sequoia. Can notice a quicker throttle response and better running vehicle

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed
product and submitted their review through a specific process that tracks purchase history.Reviewed by Tu D Truong: space

I should use it for full performance

This product is very good keep my engine run smooth

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Lipster: space

Much Better Than Expected

I bought a small bottle of P.I. to try it out. I used a little in my Harley, a small amount in my Camry and a small application in my S10 pickup which is approaching 300,000 miles.
In all three, the results were beyond just noticeable. Better performance, smooth application of power and very responsive.
I am a believer!

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Hammer51: space

Hot Stuff and I will order more

I use it in my 2006 Mark LT when we go on trips and I believe we get about a mile more to the gallon. I have 120000 miles and have used Pi in the L T about four time back and forth to Ohio.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mr. HoneyDo: space

Works just fine

Not sure how well it worked as I put it in the wife's car. She didn't complain about anything so it at least didn't make anything worse. I really like AMS products and this is another quality item. Will purchase again.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by None.: space

I will continue to use this product each year.I

I add this product when I fill up my gas tank once or twice a month. It negates the negative effects of the water in the gas, makes my vehicles run better and cleans.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by PaPa Mike: space

Works as advertised!

Every time I use this additive my mpg always increase by 1 to1.5 ! I'm surprised at how even top tier gasoline can use extra cleaning for a better burn.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Matt: space

can tell a difference

Used Amsoil PI in a number of cars and every time I use I get better gas mileage and better throttle response.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the
reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jerry Rumba: space

PI Fuel Maintenance

I have used this product in all my vehicles a few times a year at fuel fill-ups. I use top tier gasolines, but short drive habits and traffic congestion are problematic to deposit buildup. I product focuses on fuel system performance unlike so many that say you can put the same product in your gas tank and in your engine oil. That just sounds like bad plan.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brent: space

This improved my mpg

I have a 2005 Chevy 3500 with a 6.0 L it was getting 6 mpg . Cleaned air filter and put this in tank it went to 12.6 mpg and on next fill up , I got 9.6 mpg (I did pull my trailer ) that week but will try the pi fuel additive again

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by D: space

Good Product I Will Use Again

I use this product in all of my vehicle

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process
that tracks purchase history.Reviewed by Jay: space

Better than sea foam and cheaper

I used to use Sea foam, but this product is better and it is less expensive.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Suspension Jeff: space

Great product!

Pour in tank like it says! You'll get improved performance, vehicle runs smooth & great acceleration!

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed G.: space

Does a great job cleaning my injectors.

I have added a pint of this every 3 months for the past several years and my injectors have stayed clean. I have over 125,000 on my Camry and the mileage is the same as when I first got the car..

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ed: space

Does a great job cleaning my injectors.

I have added a pint of this every 3 months for the past several years and my injectors have stayed clean. I have over 125,000 on my Camry and the mileage is the same as when I first got the car..

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that
tracks purchase history.Reviewed by grandka: space

Keep a supply on hand to use in my vehicles

seems to help quite a bit when I use it

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by MtnBiker: space

Great products

Putting this in my tank every 4k keeps my 2007 F150 running in top form.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rob: space

Smooth running.

I added it to the recommended amount of gas.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Rob: space

Smooth running.

I added it to the recommended amount of gas.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Lycanit: space

Used regularly

No issue noted and no loss of mileage. I attribute that to regular use of PI. Strongly recommend

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Racerscott3: space

Been using since vehicle was new

2007 Envoy with 5.3 V8. Changed spark plugs at 110,000 mi. Looked excellent! No injector issues or fuel pump problems. Get 18 mpg regularly. All lubricants in this vehicle are Amsoil.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual
who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jamie1177: space

P.I.

Actually gained 1MPG.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jamie1177: space

P.I.

Actually gained 1MPG.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Gospelcoach: space

Awesome

This product is amazing. I have been using it for three years now, and the results are the exactly what is promised. I used a bottle every 3000 miles in all three of my cars.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Bobcat1: space

Pi is the best!

I have a Land Rover and an Acura RDX. Both say use only premium gas. By using API every 5K or so I had absolutely no problems. Highly recommend it!

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dwillz: space

Awesome

Noticed a change in my gas mileage right away!!!

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by steve: space

Great product

Every time I use this, my vehicles run better and mpg goes up as well. Recommend highly

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dave507: space

I would buy this product again

Works great

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Dave507: space

I would buy this product again

Works great

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Airwreck Nest: space

Deep clean

Smoothed out the idle and throttle response improved. I don't recommend using this all the time, but I think it is a must with every few oil changes.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by goody: space

Excellent Product

I have been using Amsoil PI for over 30 years and never had problems with fuel injectors or valves. I even put some in my gasoline supply that I use to power mowers and snow blowers.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Eriction: space

Deep clean

Smoothed out the idle and throttle response improved. I don't recommend using this all the time, but I think it is a must with every few oil changes.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ghost Runner: space

I would buy this again

I use a bottle every 5K. I'm on my third use. Each time I use it the idle of the engine gets smoother.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ricky racer: space

I would love to purschas this product again....

I use this in my camaro to help me out with the lack of performance and mpg.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Jackknife: space

Awesome cleaner

I use this every oil change, works great

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Electric: space

Great power booster

l usually sad a bottle to tank gas every 5,000 miles to prevent any trouble with gas and engine

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks
purchase history.Reviewed by Mysftail: space

I make it a part of my maintenance schedule

A few vehicles ago I noticed that my truck was running sluggish, so i purchased this product. The next oil change I added it and it did everything I had hoped for. Truck ran better, received better gas mileage, and saved me a trip to the dealer.
I recommend the P.i. improver, and use it on a regular basis.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by J&J: space

additives

They are a must do to improve performance

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by J&J: space

additives

They are a must do to improve performance

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Timbo: space

Excellent prudent, will use this many more times

Seen immediate results when I put this in my truck. Improved the idle better than several other products that I have tried.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by BusaTim: space

Excellent prudent, will use this many more times

Seen immediate results when I put this in my truck. Improved the idle better than several other products that I have tried.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ric: space

I will purchase this product again

This product has done an excellent job of cleaning the gunk out of my fuel system and injectors.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by RawEffect: space

Not convinced it did anything

Put it in gas as per directions, drove it around in my 2012 work van, 140,000km. Normal average consumption is 11.8 to 12.4L/100km, and I fell in that range for the treatment tank, and the following tank. Can't say if it cleaned anything out, but I can say it didn't help mileage.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Ric: space

I will purchase this product again

This product has done an excellent job of cleaning the gunk out of my fuel system and injectors.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific
process that tracks purchase history.Reviewed by Chris: space

Best out there

Use it in all my vehicles, snowmobiles, motorcycles, and other gasoline powered stuff.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mauro P: space

P.i. Performance Improver Gasoline Additiv

I've been using Amsoil for years great products especially this fuel additive see a difference in vehicle performance on first fill up

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by dchan: space

Good cleaner

I t help the car more power and clean a lot of unused item

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Moe: space

P.i. Performance Improver Gasoline Additiv

I've been using Amsoil for years great products especially this fuel additive see a difference in vehicle performance on first fill up

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Chad: space

Felt nothing like it

Put this in your fuel and a tank later you'll feel lower shift points, less shifting with inclines, better fuel milage. I attest to this great product. Never felt the difference with other top brands.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Charles: space

I have ordered more for use on other units

I used on a 2008 Mercedes Benz c300 and got great results.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brian: space

Great product!

smoothed out my idle and the car has a bit more zip now!

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by David: space

I buy this all the time.

It actually works amsoil is a excellent product I use amsoil in every car I own. From this to there oils.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by David: space

A Must A Each Oil Change.

This stuff is a must a every oil change.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Gerald: space

Good stuff

I will be running this in all of my autos twice a year fall and spring.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the
reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by GREG: space

Great product

This is the best fuel treatment hands down

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Denis: space

As important as oil change.

Each two months I invest to keep up clean the combustion chamber. It's a no brainer.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by William: space

I won't use anything else.

For years I used chevron techron fuel system cleaner. This product is only a couple dollars more, and does a much better job.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Stew: space

Best fuel system cleaner on the market hands down

My friends & I use this product every 5000 miles & we love it !

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Gene: space

I would buy this product again

I dont use it all the time but every time that I have my freeway MPG jumps from about 27 to about 30
1999 C5 Corvette.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the
reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ANDRE: space

i will use it til the end

every 4000 miles in the tank thank you

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Joshua: space

Burns and goes vroom

You put it in your gas tank and it leaves through you tailpipe ..... How can I review a gasoline additive? I "think" it's helping but I'm not sure.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Mark: space

Good Product for Fuel Mileage and Cleaning the System...

I use this about once a year...usually during the colder months to improve mileage and performance. It seems to help with mileage, though not sure about performance, as it appears negligible. Overall, this is a useful product. My hope is that it cleans out some of that terrible ethanol garbage we get at the pumps these days.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by TIM: space

I will continue to purchase P.I. at every oil change !

This is truly the best product of its kind available and delivers what it promises; I use a bottle at every oil change !!!

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Floyd: space

P.I. performance gas additive

Keeps engine running smoothly and good performance on gas mileage.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by LANCE: space

Treat your vehicle

After a long winter in storage, I toss a bottle of this into my 99 VFR800 fuel to give it that spring clean, it has not failed me yet, the bike always flashes right up and runs like a dream for the season.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ANDREW: space

I would definitely buy this again

Added mpg, and engine runs smoother

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by ANDREW: space

I would definitely buy this again

Added mpg, and engine runs smoother

Item Reviewed: Gasoline Fuel Additives
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase
history.Reviewed by ANDREW: space

I would buy this product again

Appears to add mpg, and engine runs better

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Alan: space

Great product!

I use one every 6 months. Keeps the injectors clean. Difference is noticeable.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Shane: space

Good stuff

Great product when used as directed.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Thomas: space

I love this product

I use PI every 5,000 miles to keep my direct injection fuel system clean.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Joseph: space

2011 Colorado

Every time I use this on my 11 Colorado i5 my gas mileage goes up to 20 and it's runs smoother. I also get a couple extra miles to the tank

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Brian: space

I will continue to use this additive

I add this to my generator, mower, blowers,boat 9.9 hp, and vehicles. It makes a difference.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and
submitted their review through a specific process that tracks purchase history.Reviewed by Stan: space

P.I. Great, Amsoil Inc. Not Great

Amsoil products are great.

Amsoil as a company, poor. Always charging more than the total paid after the items ship, shipping cost through the roof, taxing shipping...

Free gifts now!! Yeah, never saw one of those...

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Karvoris: space

Great additive

I use twice a year with 93 octane gas no issues great results.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Timothy: space

I put Amsoil in my wifes car and my son's Truck

I bought a new to me 2014 F-150 FX2 with all the bells and stuff. I have been using the Amsoil products for years,
and really like the performance that I get out of them. My hats off to the guys that make our cars and trucks
not only run better but last a heck of a lot longer. Very satisfied Pro shopper!!

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted
their review through a specific process that tracks purchase history.Reviewed by Joshua: space

Pi

This is the best stuff I've ever used

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

I was hesitate at first but was glad I bought

Great product. Unbelievable.

Item Reviewed: P.I Performance Improver (API)
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A Verified Buyer is an individual who has purchased the reviewed product and submitted their review through a specific process that tracks purchase history.Reviewed by Tim: space

I was hesitate at first but was glad I bought

Great product. Unbelievable.

Item Reviewed: Gasoline Fuel Additives
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