AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALMQT (ALMQT-CA)
Quart Bottle
Case of 12
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALM1G (ALM1G-EA)
Gallon Jug
Each
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALM1G (ALM1G-CA)
Gallon Jug
Case of 4
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
ALM55 (ALM55-EA)
55 Gallon Drum
Each
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
AMSOIL Signature Series 5W-20 100% Synthetic Motor Oil
5 star rating
Based on 6,871 reviews
5 star rating
The best oil
By 
ARNULFO, 
a 
Verified Buyer 
from 
North Carolina  
on 
March 04, 2026
As someone who drives a 24 Civic Si daily, enjoys spirited driving, racks up highway miles, and explores the best curvy roads of the Appalachians, you’re asking a real enthusiast’s question, not just “what’s good oil?” but what oil protects and performs under real-world stress. In that context, AMSOIL Signature Series 0W-20 stands out as one of the best choices on the market
By 
DAVID, 
a 
Verified Buyer 
from 
South Carolina 
on 
March 03, 2026
I have a 2011 Ford Taurus. I use Amsoil because its a liquid insurance policy for my Ford's engine.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Signature Series
By 
SEAN, 
a 
Verified Buyer 
from 
Mount Airy NC 
on 
March 02, 2026
Received oil and filter package super quick. They were packed well. Paul Archer is my sales representative and he has been great to work with. Highly recommend Paul and Amsoil! Thanks
I run this in my 2019 5.0 F-150 and the results honestly surprised me. Before switching, my truck would burn a noticeable amount of oil between changes. After running Amsoil Signature Series, consumption dropped significantly.
I also sent a sample to Blackstone Laboratories at 7,000 miles, and the results were impressive. Wear metals came back lower than the universal averages — and those averages are based on about 5,200 miles of use. They even noted I could safely run 9,500–10,000 miles before needing to change it.
Between the reduced oil consumption and the strong oil analysis results, I’m completely sold. It’s not the cheapest oil out there, but the performance and protection speak for themselves.
Did my first oil change with Amsoil Synthetic and Insane Diesel Bypass Filter install looking for 15k oil changes. I will be doing oil sample at 10k to see if 15k is doable.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great oil. However one container was busted and oil leaked
By 
MATT, 
a 
Verified Buyer 
on 
February 25, 2026
Great oil. However one container was busted and oil leaked. This is frustrating at these prices cause I know the oil is good and want to purchase but since it’s only available shipping, there are no other choices.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Oil works great!
By 
RICHARD, 
a 
Verified Buyer 
on 
February 24, 2026
I chose amsoil 5 50 after reviewing its performance on f150 forums. It outperforms motorcraft 5 50 and was a great choice for my supercharged charged 5.0
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Best oil
By 
JAY, 
a 
Verified Buyer 
on 
February 23, 2026
I’ve ran Amsoil for years. Never had any problems with oil. There app and website makes it easy to order complete kits and quantities.
Every 10,000 miles without fail, I crack open 8-1/2 quarts of my favorite oil and I start pouring this liquid gold into my 2021 Toyota Tundra. Which has 105,000 miles with the help of AMSOIL!
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