Product Reviewed: Manual Transmission and Transaxle Gear Lube (MTG)
Current Rating: 4.71 out of 5 stars
Votes & Reviews: 51 vote(s) and 44 user reviews.
Reviewed by Don: 
I totally believe in synthetic oils and AMSOIL is and has been my company of choice. All my vehicles have AMSOIL products in them.
Reviewed by Bob:
Keep using it and keep getting great reports from Blackstone Labs when I change or sample it in my transaxle.
Reviewed by Clint:
Tranny oil , works great , affordable
Reviewed by William:
It feels like I have 20lbs of butter crammed in my G56. Shifts better than new
Reviewed by Joe:
Seems like a great product.
Reviewed by Smarter:
I bought this product for my 2014 smart fortwo and all I can say is wow.. This product is the best you can get, I never thought oil could make such a difference in a car performance. Although it is just common sense.
Reviewed by Rodney:
I have used this product sense 2008, when doing fluid change this past year in a 3500 Dodge 6-speed with lots of hauling miles it still looked like the day I put it in. I believe in Amsoil products, I wouldn't trust any other brands to keep things running longer an being able to perform 100% without worrying about mechanical breakdowns. Original transmission has over 250,000 miles now with no issues. Don't hesitate to buy a great product!
Reviewed by C 150:
Expensive, yes, but the best money can buy.
Reviewed by Jonathan:
I have used this in my transaxles for years, smooth shifting with protection good enough for track duty. Recently added a limited slip diff to my transaxle and it performs beautifully with the amsoil gear lube. I will not run anything else.
Reviewed by PeacemakerJack:
The NV4500 is a unique beast. It is a five speed tranny build by New Venture Gear in conjunction with Castrol to meet the ever growing demand for a stout manual overdrive tranny to back up the stronger diesel motors found in modern pickup trucks. A new gear lube was formulated for this specific transmission. I had owned my Chevy for awhile with this tranny in it when the clutch began to fail. After an overhaul, the tranny shop installed
conventional manual gear lube. Within three weeks, I couldn't hardly shift the truck into first or reverse and it was even getting hard to get it into second. I did my own research and found out about the special fluid. I immediately checked to see if Amsoil handled a fluid formulated like the Castrol Syntorque designed for the NV4500 and was overjoyed to see that they did. After changing the fluid, I noticed an immediate difference, a great improvement in shift quality throughout the gear range and rpm powerband. Once again Amsoil delivers a great product suited for a specific need. I would highly recommend this product to anyone owning a vehicle equipped with the NV4500.
Well done!
Reviewed by jcs757:
This is simply fantastic gear oil for the older spec manual transmissions that require a GL4 spec oil!
Reviewed by Andy:
I bought an '09 G37 memorial day weekend 109,000 miles. Changed oils to AMS. in storage for winter. Was told great things about AMS. I will say more next year when I experience the greatness of AMS!
Reviewed by Rockcrusher:
I used this product in my 1969 427 Camaro. I've have this car for over 20 years and have used the GM trans gear lube and multiple other brands over the years. Nothing have worked better or have even come close. There was a noticeable difference right away. The shifts seems so much smoother and it actually felt like everything was tighter and a lot less slop. I would highly recommend this product. I even used the gear lube in the squeezable pouches.....it made it so much easier and also worked great.
Great Idea!! Great Products!!
Reviewed by G'd up from the feet up:
Great lube that made a tactile difference when shifting
Reviewed by 2ndgencummins:
Amsoil is the best out there. Serviced my nv4500 and the 250k beast is still shifting gears like new.
Reviewed by Jamie Smith:
Changed out transfer case and transmission out of factory oil at 75,000 miles. Now it is as smooth as the day I drove it off the lot. Great stuff. Would highly recommend. Bought more to put on the shelf for the next change. I won't wait as long to change out next time.
Reviewed by RG:
First time using this product and it is the best product i have used to date. Please note that if you use a pump to install that the bottle opening is bigger so have the appropriate sized pump for that. I onlyhad the normal size at the time so i have to improvise.
Reviewed by Moe:
Used Amsoil many years ago
Reviewed by JimP:
Made the transmission quieter (Munchie M-21). Not sure how the trans synthetic, but it does seem to shift smoother. Next change I will likely got to a heavier weight.
Reviewed by Brian:
Needed to replace clutch in my 78 FJ40, this was perfect for Transmission and transfer case, shifts more smooth than ever
Reviewed by 1blkc5:
No difference in shifting but I use amsoil products in everything I own .
Reviewed by Josh:
Put 7 quarts in my cummins g56 transmission after reading several good reviews of this fluid and i could not been happier only issue is i should have done it sooner. The truck is quieter and no issues with shifting at all. Dodges atf4 is not what mercedes says is the correct fluid for the transmission as this is one of the easily obtained fluid for consumers in north america to get. I will be swapping this into the axles when the time come for their service as well.
Reviewed by J-byrd:
Used this tranny oil in 2 manual transmission Toyota 4runner.
Quieter tranny and perfectly smooth shifting.
The biggest difference was 1st gear engagement is now super easy.
Reviewed by greg:
Used in Chevy 5 Speed Trans ( NV4500)
Reviewed by cooldork:
Amsoil has always kept all my equipment running like new and showing no signs of wear. Hot or cold weather, it never matters.
Reviewed by Chris:
I've had good luck in the past with this product, but after putting it in my 296k mile trans it is harder to shift and makes more noise. I will have to switch to a synchromesh or try another product.
Reviewed by Jack boosted tacoma:
Works as described and I feel good about having it in my truck. No other fluid I'd rather run off-road
Reviewed by Tundra08:
Put this in a 07 Pontiac vibe (as recommend on amsoil website), it worked great for about 4000 km but then ran into issues with shifting and gears grinding, switched it out to the severe gear oil and never looked back, way better performance now. Now I am sure this product would work great in other manual transmissions.
Reviewed by Kev:
My p/u car tractors skidloader baler rear tine tiller anything that needs gear lube
Reviewed by toyboy:
excellent product but it is on the pricey side.
Reviewed by Nightw50:
I used this product in my 95 Geo Tracker, it shifts so smooth I can shift without using the clutch. Also the counter shaft bearings quite whining.
Reviewed by Rob:
Installed this in my wife's Pontiac Solstice as it was time to change out the factory fluid
Reviewed by Jedi:
Bought this to replace the fluid in my 95 Jetta. I haven't changed the gear fluid in a very long time and it has over 200k miles.;. My friend suggested I do it and go with this stuff. Job was real easy to do and everything seems to be running great so far!
Reviewed by Al Bundy:
I just finished a clutch job on a shop truck (97 Dodge 2500) that has been through more than one over the last few years due to a number of different drivers. Owner said this time was different and the truck was shifting like the day he drove it off the lot, the only thing I did that I hadn't done before this time was use Amsoil. That simple.
Reviewed by Kenneth:
I am using this in my race car
Reviewed by Jason:
I know to always use Amsoil products. Don't know why ATF is recommended for my 2000 Mustang GT manual transmission. I want to put this in it instead.
Reviewed by
William:
Topped off after a drive axle replacement. Seems to work great. Shifter and pedal are happier!
Reviewed by Shane:
Currently using it in my 94 ram with the nv4500 and in my 04 VW TDI. It meets the specs for both vehicles manual transmissions, smooth shifting all around. Recommended to my friends and family.
Reviewed by Jerry:
Freed up my VW transmission
Reviewed by Josh:
Solved a common 1-2 shift grind in my 2012 chevy cruze. A lot of people with the 6 speed manual complain about grinding shifting between 1st and 2nd no matter how they shift. This product took care of that problem. No more grinding in any gear
Reviewed by Loren:
Best stuff going!!
Reviewed by Josh:
Solved a common 1-2 shift grind in my 2012 chevy cruze. A lot of people with the 6 speed manual complain about grinding shifting between 1st and 2nd no matter how they shift. This product took care of that problem. No more grinding in any gear
Reviewed by donnie:
hard too find gl4 in any good quality at all ..answer to my needs for a synthetic diff lube that will not attack the yellow metals in my components ..well done
Canada
United States
YES
replaced my 6 speed manual trans with this fluid. It shifts good and no noise.