AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil
ASMQT (ASMQT-CA)
Quart Bottle
Case of 12
AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil
ASM1G (ASM1G-EA)
Gallon Jug
Each
AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil
ASM1G (ASM1G-CA)
Gallon Jug
Case of 4
AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil
ASM55 (ASM55-EA)
55 Gallon Drum
Each
AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil
AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil
5 star rating
Based on 6,871 reviews
5 star rating
Worth every cent
By 
JAY, 
a 
Verified Buyer 
on 
February 22, 2026
The only oil I run in vehicles I care about. Specifically this oil weight I use on my 2018 Honda civic si.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Efficient and Superb oil product
By 
PHILIP, 
a 
Verified Buyer 
on 
February 20, 2026
I protect my motor vehicles with the highest rated quality synthetic oil products. That being said, AMSOIL shows and proves every time I use my beloved family vehicles. AMSOIL keep up the amazing work and research!
The original synthetic is still the best. My 2011 Focus has 3000,000 miles. Does not use any none zilch zip nadda oil. I will never use any other brand at sny price.
Amsoil has protected me for years now all my engines never had an issue. All the research I’ve done leads to amsoil being the superior product among the oil masses
After viewing numerous reviews comparing motor oils on YouTube. I came to the conclusion that 0W-40 Amsoil Signature was, without a doubt, the best. When you are protecting a twin turbo engine, nothing else is better than Amsoil 0W-40.
Nothing.
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