I’m only a 1000 miles in on my first time using it, but it seems to be working great for my 2011 F150 5.0. I just had my engine remanned for the second time in a year about 3,000 miles ago, but this is the only oil I’ve found that quiets the Coyote knock. When I cold crank it, the knock is noticeable for the 1st minute, then the engine runs remarkably smooth. With all other quality oils, the knock was never silenced, even after the reman. I bought the truck used 9 years ago with 55K miles on it, and it currently has 280K. I’m looking forward to getting engine fully broken in so I can take advantage of the long change intervals (depending on the used oil analysis).
I'm not one to trade up frequently in my vehicles. With the price of new vehicles skyrocketing every year, I look after my vehicles to ensure long trouble free motoring. I did my research and test after test, Amsoil products came out on top. We own a 2017 Kia Soul EX and a 2018 Dodge Grand Caravan Crew Plus. I switched over to Amsoil a few years ago. I do my own oil and filter changes so I know it's done correctly. Startups are quick and quiet and I've noted an increase in fuel mileage. Nothing dramatic, 1-2 decrease in Li/100km. Magnetic oil pan plugs on both vehicles are clean at oil change time. The Dodge runs highway trips and the Kia is mainly our in town car. I service the Dodge between 10 -12 thousand kms and the Kia at 7,000 kms. Amsoil oil filters are installed at every service and both are metal free when inspected. Yes, it is more money but I truly believe that Amsoil is a superior product.
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
Amsoil 0-20
By 
ROBERT, 
a 
Verified Buyer 
from 
West point ms 
on 
September 11, 2026
I use amsoil signature series in my bmw suv it provides excellent performance on a 10000 mile service interval, this is the best money can buy no doubt about it, I would recommend it to anyone
I choose Amsoil after reading reviews from other people. My first purchase was for my HD motorcycle. Reason for Amsoil over HD oil, HD has one oil for engine/transmission and primary drive, I do not agree that one oil can cover three components. Amsoil offers separate oil for each component which mirrors my belief of separate oils. I am totally pleased with my decision to use Amsoil, engine, transmission and primary are all operating much better. I made a second purchase for my Subaru Forester; oil not changed to date but will be in the near future. I found it very easy to place my order and delivery time is amazing.
This oil protects and extends engine life like no other I have used. My 2023 Genesis is exactly three years old with 190,000 miles on it. Runs like new. My prior rides including a 2011 Hyundai Elantra (I purchased new) spanned over 425,000 miles without a single engine repair. The best protection for long life... Amsoil Signature grade oils
We've been using AMSOil for about 20 years. Love that we can go extra miles between oil changes knowing that the engine is protected. See better gas mileage as well!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
GREAT PRODUCT
By 
TED, 
a 
Verified Buyer 
on 
September 07, 2026
I've been using it for years. The only synthetic oil I will use.
I switched to Amsoil years ago and it's the only oil I use now. The best part now of where Amsoil has a distribution center, I usually get my orders next day. Very high quality product and improved the drive on two of my vehicles.
Have used Amsoil for years in my motorcycles, will trust nothing else for my Alfa but Amsoil. Always dependable, no slugging and after thousands of miles drains virtually clear. Won't trust any of my vehicles to anything else. The Bees 🐝 Knees!
This is a carousel of Shop by Equipment slides. Use Tab to navigate through the carousel or the Next and Previous buttons. Use Enter to select a slide.
Thank you for visiting www.amsoil.com. Certain parts of this website may not function with Internet Explorer. To continue shopping with us, please update your browser using one of the options below.