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 6,894 reviews
5 star rating
The only thing I use.
By 
Miles, 
a 
Verified Buyer 
from 
New Jersey 
on 
January 09, 2019
Bought to use in a 2018 Honda Accord 2.0 turbo as the stock oil was burning up and leaving black soot all over the back of my car. The amsoil doesn't do that and now I feel confident about my car not blowing up from lack of lubrication and costing me a ton on money to fix. Just wish they sold it in a 5 quart jug cause having to buy a gallon and then a separate jug is a pain and the individual quarts aren't cheap.
Amsoil is the only oil company that I've ever been able to provide 3rd party testing documentation against other synthetic oils back when no other synthetic manufacturer would provide that sort of information. I switched from Royal Purple to Amsoil when my father recommended them. I asked them to provide documentation that they were the superior product and I would switch. They did and I've been a loyal customer for over a decade now. I drive all of my vehicles I've owned hard. I feel they are made to be driven, so I drive them hard and push them simply for the joy of driving. If I am going to purchase a sports car, I plan on driving it like one. I use Amsoil to make certain the internal parts of that engine have the best protection I can give them all year around. I have never had an internal part failure on any vehicle I have ever had due to lubrication failure. I trust no other oil to be in any vehicle I own, and I push my friends and family to do the same.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Love this stuff
By 
Mike, 
a 
Verified Buyer 
from 
New York 
on 
January 09, 2019
This Oil is Great. Always Recommend this to others.
Feel better engine performance,also the mix of higher octane of gas helps also,love that it limits me to one oil change per year depending on more driving or less.
Finally tried Amsoil. I put it in my 2013 Cadillac and noticed an instant difference. Smoother idle. Smoother acceleration. Increase in fuel mileage. I will be using Amsoil from now on in all vehicles.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best oil ever used.
By 
Mike, 
a 
Verified Buyer 
from 
Monroe Tennessee 
on 
January 07, 2019
I changed to Amsoil in 2014.I had a new Chevy truck and by changing to Amsoil 0-20 increased MPG by 1.5 per gallon. It worked great for 75,000 miles. Traded trucks for a 2017 Chevy and changed with Amsoil the first oil change. Just great oil. I also use Amsoil 20-50 in my Harley Davidson which runs cooler than any other oil that I have tried. I run the 20-50 Amsoil dirt bike oil in my 2015 YZ250FX works great. I recommend Amsoil to all my friends. Amsoil has never let me down.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best protection and long drain oil
By 
Jackal, 
a 
Verified Buyer 
from 
New England 
on 
January 07, 2019
Been using and oil puducts for years it's by far the best lubricant in the industry!
You cannot find a better oil in America than Amsoil. Read the test data and all the reviews. I was always taught to do research on products to find the best. Thats what I did. AMSOIL is the best!
I use Amsoil in all my vehicles, 2015 Ford Explorer, 2005 F250 super duty, 2016 GL1800 Goldwing, & 2008 Ford Taurus, It's a super high grrade of oil and I had a 1996 Chevrolet truck 5.7L that i had over 250,000 miles and had pulled the valve covers and it looked as clean as if I had just rebuilt the engine !
I have been using amsoil 5w-30 on my 2004 range rover hse and 2008 range rover hse for almost 15 yrs now and these oil brings back old cars back to life instantly from fuel efficiency to engine fluidity. Engine feels like new. I change oil from 6-8 months or 7500 miles.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Great oil
By 
Dave in CO, 
a 
Verified Buyer 
from 
Greeley 
on 
January 04, 2019
Love the performance of my motorcycles w this oil.
Used signature 10-30 synthetic in my 2002 sequoia and drove almost 15,000 miles before changing the oil and filter. I sent a sample of the waste oil to a lab for analysis. The oil was good, still usable, with no traces of problems.
I've been using Amsoil for almost 20 years, my 1999 GMC Yukon Denali, 219,000 miles, and 2008 Mitsubishi Outlander SE, 221,000 miles using 0w30 Signature Series and both still going strong, and now a 2016 GMC Canyon Diesel truck using the 5w30 European Formula, Highly Reliable Product in my book.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Preaching to the choir
By 
Dave, 
a 
Verified Buyer 
from 
central Texas 
on 
December 31, 2018
Have been using Amsoil everywhere possible, don't have to ask twice.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
This is the only oil I would use again
By 
Tony D, 
a 
Verified Buyer 
from 
Orland Parkv 
on 
December 31, 2018
Motor run smoother get better gas mileage and change the oil less Oil still looks great when it comes out
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
The best oil and filter out there!
By 
Mobilemotormedic, 
a 
Verified Buyer 
from 
Winter Park, Florida 
on 
December 30, 2018
I switched from conventional oils and filters back in 2012 and its been the best decision I've made concerning lubricants.
The third party tests only depict the facts. But I have many years and many vehicles that only used Amsoil. I appreciate that Amsoil offers OEM and other options. That's awesome. But I've always gone with the Signature Series oils. I keep things as simple as I can. I don't want anything but the best, and I don't want to have to second guess engine protection. A full year (repeated years, one is a 13 yo Focus I bought new), that has never been more than a half a quart below full at its annual oil change. ??? Why scrimp on protection when I'm saving money and producing much less recycle oil, AND the car runs awesome after all these years?
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Top Tier Oil
By 
Mr. Bob, 
a 
Verified Buyer 
from 
Sauk Rapids, MN 
on 
December 30, 2018
I have used this since the first oil change in my car that I bought new in 2016. Newer vehicles call for a 0W-20 oil. With that thinner weight oil I am concerned about wear protection. Looking at independent test lab results of Amsoil 0W-20 oil I see that it does better than other oils and passes the tests with ease. My car also has variable valve timing which can be vulnerable to sludge buildup. A clean synthetic oil is a must and the Amsoil additive package fights sludge better than others. We get easier cold weather starts and slightly better mpg too. Spendy but good.
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