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 6,861 reviews
5 star rating
The brand I trust
By 
Ricky C, 
a 
Verified Buyer 
on 
November 08, 2025
Been using Amsoil motorcycle oil in my Harley since I bought it new in 2012 and it’s been great, no issues whatsoever. Decided to start using the signature 0W – 20 in my ‘21 Honda Civic 1.5 L turbo for the first time, and so far so good! 4 quart jug is the perfect amount for my vehicle leaving a quarter of a quart for top off if needed. I expect nothing but the best from Amsoil. I recommend it!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Great Product
By 
RODRICK, 
a 
Verified Buyer 
on 
November 08, 2025
I've been using Royal Purple oil for 10 years in my Lexus. I can honestly say I am very impressed with the improvements my engine has since using Amsoil Signature Series. My engine is 50% quieter and I dont burn a quart of oil in 5,000 miles. Thanks.....
I run Amsoil exclusively in my 1986 First Gen 4Runner, the 2200RE engine, the 5 speed transmission, the transfer case and the rear differential. I have over 400K on this engine rebuild, and over 907K total miles, I love it.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
No brainer
By 
CALEB, 
a 
Verified Buyer 
on 
November 06, 2025
A true value over time.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Real Synthetic Motor Oil
By 
IAN, 
a 
Verified Buyer 
from 
Los Angeles 
on 
November 05, 2025
a co worker turned me on to this product after doing some homework. I gave them a shot & been using there products for years. My mechanic was curious too, because they don’t sell in the stores. Have been using ever since.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
TOYOTA CAMRY
By 
ROBBY , 
a 
Verified Buyer 
from 
St. Augustine, Florida  
on 
November 04, 2025
I use this in a 2019 Toyota Camry. I still do the oil changes at 5,000 miles instead of Toyota's recommended 10,000 due to fuel dilution and mostly short trips.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Lexus RX 350
By 
ROBBY , 
a 
Verified Buyer 
from 
St. Augustine, Florida 
on 
November 04, 2025
I just started using this in a Lexus SUV. The owner plans to keep the vehicle for a long time. I wanted to use the best oil I could to help with that.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Excellent product.
By 
Top G, 
a 
Verified Buyer 
on 
November 04, 2025
I’ve been using AMSOIL products for years, and they’ve consistently performed exceptionally well. My 2019 Subaru STI runs on 5W-30, and my Subaru Forester uses the harder-to-find 0W-16—AMSOIL has reliably met both needs. I’ve never experienced any issues, and the level of protection their oils provide is outstanding. In my experience, AMSOIL is one of the best options available.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Better than the 0-20
By 
PATRICK, 
a 
Verified Buyer 
from 
California  
on 
November 03, 2025
This weight is much better than the 0-20 that GM recommends for the 2014—2018 6.2liter.. Better gas mileage, better lubrication.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Us this in all our 3 Hondas
By 
GAIL, 
a 
Verified Buyer 
from 
Near Charlotte NC  
on 
November 03, 2025
We use this oil in all our 3 Hondas.
We would not use anything else
Been using this oil from my trucks first service and will use anything else if everyone uses this oil cars and trucks would last so much longer thank you amsoil
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Synthetic oil
By 
ROD J., 
a 
Verified Buyer 
from 
Vermilion 
on 
November 02, 2025
I've used Amsoil for years in my Harley. I love it! The Ford dealer charged me $106 for an oil change the last time I took it in......and that will be the last time I take it in. I bought the Amsoil and filter for my truck and changed the oil myself for far less than Ford charged.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
great stuff
By 
JOSEPH D, 
a 
Verified Buyer 
from 
SC 
on 
November 01, 2025
Over the earlier years castrol was my oil of choice.Since i moved to AZ in 2007 ive used amsoil and decided that was a better option due to the extreme heat our vehicles deal with in Arizona.I NEVER go over 3750 miles on a change and from the few oil sample tests done Amsoil is the proven winner
A close friend of mine uses Amsoil products for his and his wife's vehicle's who is always working on every one else's vehicle's but only doing regular maintenance on his and her vehicle's. So he explained that he uses Amsoil products, to better protect their vehicle's. So I did some research and liked what I was finding out about Amsoil. So I've started buying Amsoil products for my vehicle and I feel more confident in the motor being protected. I'm a big fan of the Signature Series from Amsoil.
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