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 6,867 reviews
5 star rating
The best option for your vehicle
By 
MARK, 
a 
Verified Buyer 
on 
April 24, 2026
I’ve been using AMSOIL for many years in all my vehicles and never had any problems. Highly recommended.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Great oil
By 
Midwest Hunter, 
a 
Verified Buyer 
from 
Central Wisconsin 
on 
April 24, 2026
Have been running this oil in multiple vehicles for years. Over 500k between them all, not sure if it's the oil, but no oil leaks and not a odd noise to heard. I matched the oil with the Amsoil filter, 1yr oil changes save a lot of time when you have a bunch of vehicles to maintain.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Quality products
By 
DAN, 
a 
Verified Buyer 
from 
Mountain home Idaho  
on 
April 22, 2026
I've been using this product for years, and every time I have done any maintenance on my vehicle l'm very impressed with the cleanliness of the internals of the engine.
Been using Amsoil products for over 25 years. Never had an issue with them, until the last couple of years. I've noticed on 7,500 mile oil change intervals that the viscosity drops out of range. 4 of my last 5 oil samples tested in 2 different vehicles have returned lower viscosity than it should be. My last sample only had 5,800 miles on it and it was lower than it should've been. Making me wonder what changed.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Oil change filter
By 
GLENN, 
a 
Verified Buyer 
on 
April 22, 2026
Great products
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Great Product
By 
PATRICK, 
a 
Verified Buyer 
on 
April 21, 2026
Been using for many years.
Love the quality
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Amazing oil at a good price!
By 
BRYAN, 
a 
Verified Buyer 
on 
April 20, 2026
I use Amsoil 0w40 in my 2015 Challenger SRT392 along with Amsoil oil filter. I feel it’s the best oil for this car. I’ve been using Amsoil since 1999 and will never change.
Been using Amsoil since 1999 first in my motorcycles and then all of my vehicles starting in 2001 and have never looked back. It’s all I’ll ever use and Amsoil filters. Highly recommend Amsoil to everyone I know, but not all will listen and take advantage of the best oil in the business if you ask me. I use 0w30 in my Ram 1500 with a HEMI of course. And the same in my Jeep Wrangler JKU. LOVE THIS OIL.
I use 0-20 in my bmw x-1 suv, and 5-30 in my wife x-5 they both perform perfectly even the bmw service dept said excellent choice, this speaks volumes for them as they ate the best techs out there Roadshow Bmw memphis tn
Product arrived on time as advertised. Quality, ease of pouring and the clear liquid level gauge is a nice feature. The engine seems to like this oil as there is very little engine noise while running.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
For Added Protection
By 
GARY, 
a 
Verified Buyer 
from 
South Carolina 
on 
March 30, 2026
Have been running the Signature Series 5W-20 in my son's 2015 F150 with the 5.0 Coyote since we purchased it last year with 148,000 miles. Ran the AMSOIL Engine Flush for 15 minutes before our first oil change with AMSOIL because I want the best protection. Seems to run quieter and hope to get another 150K miles, running all fluids on AMSOIL... Signature Series Engine Oil, Signature ATF, Severe Gear for Differentials, Signature ATF for Transfer Case, P.I. Performance Improver every 4K miles, Upper Cylinder Lubricant, Dominator Coolant Boost
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Mustang Oil Change
By 
CARROL, 
a 
Verified Buyer 
from 
South Carolina 
on 
March 28, 2026
I’m running a 2019 Sierra with the 6.2L. My truck isn’t in the recall range, but I still want to have the best oil in it. And my employer pays for my oil changes.
I don’t like what I’m reading about the manufacturer’s reasons for using 0W-20/40 in these engines (gas mileage). So I’m using a thicker oil. I’m seeing zero difference in mileage since I switched to this oil, which is good.
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