Have used this from the get-go for all my gas rigs. Before that, used in all fleet gas rigs before retirement.
Always the best you can use. Hands down.
I only use amsoil in my truck and Harley, there's nothing better I think,been using it for years, absolutely no regrets excellent oil
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
No more flat cams
By 
CamaroFan, 
a 
Verified Buyer 
on 
October 18, 2021
I had a custom SBC race engine built and had issues with Cams going flat. First cam went flat after break-in and switching to OTC oil. Second cam went flat after 6000 miles on break-in oil and switching to Tier 1 Synthetic oil (which was guaranteed to work with my cam and lifters). Rebuilt entire engine for a 3rd time and started running Amsoil 10W-40 high zinc. 7 years later the engine is still running strong and makes same HP as the day it came off the dyno. I also run this oil in my truck, which pulls a racecar trailer on a weekly basis.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great
By 
ANDREW, 
a 
Verified Buyer 
on 
September 13, 2021
Use this in my 26 year old F350. Still runs like new. It's my farm truck.
By 
CHRISTOPHER J, 
a 
Verified Buyer 
from 
Washington DC 
on 
August 31, 2021
I’ve almost always used BMW recommended products for my car. As I know my motor is higher compression and extended service intervals, I’ve chosen 20W50 Amsoil. This product is awesome and has met and exceeded my high standards.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Premium Protection 20W-50 Synthetic Motor Oil
By 
JIM, 
a 
Verified Buyer 
from 
Jensen Beach, FL 
on 
August 29, 2021
Indisputably the best for our 1982 VW Westfailia Vanagon camp mobile!!
Amsoil AMO high zinc full synthetic is the recommended oil for my cars engine . The 90-95 Corvette ZR1 needs an oil with the correct additive package of zinc and phosphorus. It's LT5 engine with 4 cams, flat tappets , and 32 valves needs an oil that meets the manufacturers requirements. That oil use to be Mobil 1 full synthetic. Mobile 1 has reduced the zinc and phosphorus package in their current oil. Most new engines have roller valve train and they also reduced the package over catalytic converter life concerns. My engine builder recommends the Amsoil AMO product. It meets the original manufacturer recommendation . I use only Amsoil in all my cars . Especially my Corvette ZR1 with its exotic 528 horse power LT5 . It's cheap insurance .
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