Product Reviewed: Extended Life 10W-30 Synthetic Motor Oil (XLT)
Current Rating: 4.95 out of 5 stars
Votes & Reviews: 40 vote(s) and 316 user reviews.
Reviewed by squire: 
I've been using Amsoil products for about 17 years now and I never cease to be amazed how it makes my high milage 05 prius with 322,000 miles run like new! I use the Signature Series 5w30 in it and in some of my other vehicles I use the XL for seasonal oil service! I've tried all those other brands.And they can't compare.I would say, I am a completely satisfied Amsoil fanatic and,So glad of it. Thanks Paul
Reviewed by Moomoo:
Great product. US Amsoil in all my stuff and most of my friends use it too
Reviewed by Octanelovaer:
Run this in my 99 expedition 6.3L
250k+ and stillet not a problem with the motor. Change every 7500-10,000 and oil is still clean on the dip stick
Reviewed by Roncer:
Good value, great quality
Reviewed by Catman:
I like the fact that I change my oil twice a year with good protection and is priced as much or less than conventional oil
Reviewed by Jb:
I personally put amsoil in my three cats . This oil made a believer out of me when I tried it in my old Dodge caravan and the motor sound like new . That old click I used to hear on the motor when idling was gone .
Reviewed by Ben:
I use Amsoil for my personal and commercial vehicles. It has surpass and improved all the vehicles I use on a daily basis.
Reviewed by Lycanit:
I was a loyal customer of 30 years after my drag VW had a bearing improperly placed during assembly. The engine ran perfectly. And only gave a problem after several pulls. On break down the crank was perfect. Only bearing replacement was required. The builder was apologetic but couldn't believe the protection provided by Amsoil. The raptor happily drinks 10-30 now.
Reviewed by borovik:
I use for my family cars, and my boat
Reviewed by Ben:
I use the XL series for my personal vehicles. 2006 Mazda and a 2008 Chevy. I am very happy that my vehicles run and operate like brand new everytime.
Reviewed by Asbet:
Fantastic
Reviewed by Lots-a-miles:
I bought my 1992 Toyota with over 150,000 miles expecting to replace the engine soon.
I have used only Amsoil long life oil since then.
I do stop and go driving all day.
So far no engine work and it just keeps running.
520,000 still drive every day.
Reviewed by PJC:
It makes my camaro run better and gets better fuel mileage.
Reviewed by Leg's:
I love all the products from Amsoil when using Amsoil for 14 years Im a big believer in your products I use your PMI injections cleaner all the oil products 10w30 10w40 20w50 I'm a big believer in Amsoil
Reviewed by gopher:
I used XL 10-30 in my 1982 Toyota P'up with 22R engine. She ran smoother, cooler & quieter. Used Amsoil in transmission & differential. Still running strong @ 344,000 miles!
Canada
United States
Best products money can buy !
Amsoil Oil and filters are unsurpassed in the industry ! Being the first in synthetics puts even their closest rivals a distant second; there truly is no comparison to Amsoil lubricants !!!!