AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil
AZFQT (AZFQT-CA)
Quart Bottle
Case of 12
AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil
AZF1G (AZF1G-EA)
Gallon Jug
Each
AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil
AZF1G (AZF1G-CA)
Jug
Case of 4
AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil
AZF55 (AZF55-EA)
55 Gallon Drum
Each
AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil
AMSOIL Signature Series 0W-40 100% Synthetic Motor Oil
5 star rating
Based on 6,897 reviews
5 star rating
The One Oil Brand I Trust
By 
The Celica Driver, 
a 
Verified Buyer 
from 
Chicago, Illinois 
on 
May 29, 2017
I use Amsoil signature series 5w-30 on my Toyota Celica GTS and it makes my car runs great. My car is around 250k miles and I don't have oil burning issues on my vehicle. During the winter time it starts smoothly and it doesn't hesitate to crank. Oil intervals can go longer than 4k to 5k but I usually change them at that point since I drive over 70 miles a day in rush hour. Great oil and great pricing.
I used this in my '15 WRX which requires a high shear stability, synthetic oil. This oil was recommended by many websites and forums as one of the top oils you can use. Worked great while I had the car but I plan on putting it in my new Infiniti as well.
I have been using Amsoil for over 35 years. Our current commuter car (120 miles per day) has 265K miles and still runs like a top. Uses very little oil (less than a qt per change)
I have this in my 2010 caravan. Have roughly 10k mi on the oil and it has discolored to a color I'd really want to change it at, but the dealer I got it from assured me that even though the oil will turn colors that it will NOT breakdown! So I'm trusting his word
Merchant Response
Hi Stevie: Like any motor oil, AMSOIL motor oil will darken as miles/time accumulate. In addition, AMSOIL motor oil is amber in color, and in many instances is slightly darker in color than other brands of motor oil. This, along with the oil containing outstanding detergents to keep the engine clean, the oil can darken within the mileage that is recommended for use. The dark color of the oil does not mean the oil is no longer good for continued use, and should not be the single determining factor on the oil's ability to perform as prescribed. Thanks for your comment!
Have used AMSOIL OIL for years. 2003 SVT FOCUS has 332,600 miles on it. 2011 SAAB has 105,200 miles on it. Excellent products.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best product in its field
By 
Chevy 2008, 
a 
Verified Buyer 
from 
Washington DC metro area 
on 
May 23, 2017
I use this product on my chevy suburban 1500. Gotten better gas mileage, and of course longevity. Burn off is very very low. No other oil comes better!! This is the best. It makes Mobile One look likes water to synthetic oils. It takes a lot of miles to burn off this synthetic oil. Up to a year or 25,000 miles before changing the oil! Worth the money and investment!!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Gas mileage
By 
Carlitos, 
a 
Verified Buyer 
from 
Indio Hills, ca 
on 
May 23, 2017
I have a 2008 Lexus v6 and recently checked mileage on 300 mile trip. Checked and double checked, 34 plus MPG. Amsoil Signature in motor with KN Air filter. VERY IMPRESSED!! Carlitos
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great stuff
By 
M8ttix, 
a 
Verified Buyer 
from 
La Angeles 
on 
May 23, 2017
Used to run this in my stock sti motor. Now it's built and I run the 5w40 Euro. Love all your stuff never had a issue.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
I purchase Amsoil for all my personal vehicles
By 
Tom, 
a 
Verified Buyer 
from 
New York 
on 
May 23, 2017
Best synthetic on the market hands down
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Best Oil on the market
By 
don't have one, 
a 
Verified Buyer 
from 
Barstow, CA 
on 
May 23, 2017
I don't use any other product in my vehicles, only Amsoil Baby.. if you want the best buy the best here it is Amsoil.
While I was apprenticing to be a mechanic in the early 1980's a friend of mine challenged me to a comparison test between Amsoil 100% synthetic motor oils and conventional oil. As a result, I switched to Amsoil and have used it for over 30 years in all of my 4 stroke, 2 stroke, and diesel motors. It lasts longer, doesn't have the viscosity break down, and is a better lubricant than other oils.
I use my truck for work and personal time. I live in Toronto. Dealing with heavy traffic and temperaturea - 25 C at times, it takes a toll on the engine, very happy with the oil
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