Customer Ratings & Reviews

I have used Amsoi in all my vehicles sense it first came out, I notices a increase in fuel economy and performance. I put it in the motor, Transmission and rear end of my race car and increased my ET by .5 seconds which is amazing I also use it in my semi truck with the same results in mileage and performance

Awesome oil. I have a 04 Dakota 4.7 with the dreaded lifter knock and after trying a few different things. I was recommended to try some amsoil products and I will never go back to anything else. Gave my motor a good feel and the tapping is very minimal, you can barely hear it in and it goes away after a second or two. Will always use amsoil products.

My boss turned me on to this product and he's been using it for years in end. I always used synthetic oils in my trucks and cars but never used amsoil, I can already tell a difference in gas mileage and performance in my car since I converted to this product. Very satisfied !

Use this in my Prius Hybrid and gained 1.3 miles per gallon. The added protection of Amsoil in my engine gives me a great peace of mind.

I have used this product for about eight years now and my car is 13 years old and still going strong/

I use this in my cars from brand new!!

My truck uses 8 qtrs and I was not wanting to change the oil every 3 to 4 thousand miles so I used Amsoil for the best protection and duration. I use Amsoil in all of my transportation. Never had a mechanical problem. Start out with the best and don't worry.

I have ran Amsoil in my diesel truck since 2008 and converted my girlfriends gas truck over about two years ago. I like reading about the testing done comparing Amsoil products to other companies products. I feel like Im using the best oil out there. Soon my 70 Chevelle will run Amsoil too.

I replaced a leading brand with Amsoil because genuine lab tests demonstrated superior performance in our hot climate. It ,as a bonus stay's cleaner longer in my motorcycle and high performance boat and car engines than other synthetics and petroleum based oils, which makes for far less combustion made carbon and fuel contamination, the two main engine damaging agents that accumulate in the crankcase..

I works well in my dakota and have used only amsoil in my ruck for the last 100k I have @190k on it now

So far the Signature Series 0w-20 oil is doing great in my 2016 Honda Accord 6-speed manual. My first oil change was at 5,000 miles and my mileage as gone from 35+ to 39+ mpg. I'm sure that Amsoil had something to do with it. Car runs smooth and strong. Almost ready for my next oil change. I'll be using the Signature Series in my Honda from now on. Amsoil worked fantastic in my old 2003 VW Jetta TDI which had over 360,000 miles when I sold it and my friend who bought it from me will be using Amsoil in it as well (now has over 375,000 miles). I'll be switching my Ram 6.7L Cummins 6-speed to Amsoil next change as well. Though a little pricey, Amsoil makes good products that definitely protect your investment.

the best oil money can buy, don't take my word, try it for your self.

Protects at higher levels than the competition and is great in cold weather start ups.

I started using Amsoil Signature Series 0W-20 in March 2008. I was skeptical that oil could last a year so I tested it out on my Mercury Sable before putting it in my F150. I always used Mobile1. After one year and about 14,000 miles I sent out an oil sample to be tested. It came back no damage to the engine and that I could kept running the oil. So I ordered enough oil for the Sable and the F150 and have been running it ever since in every vehicle I own. I started using the 5W-20 when it became available. And I always use Amsoil oil filters.

I been using 5W-20 AMSOIL in my supercharged 06 Mustang for years. Runs like a champ. Also use it in my 10 F150 KR as well which I use for hauling and road trips. Wouldn't recommend any others. Great oil, provides solid protection. I use their other fluids in my vehicles as well to include my 14 VROD Muscle and 09 Nightster.

I started using Amsoil in 2011. I talked to several people at work that used Amsoil products and we're very satisfied with it. I got a dealer at work to order the Signature Series for my Tundra. Well, 5 years later, I'm still using it and still loving it. I've also used the transmission fluid and products for my ATV. I'm sold on Amsoil.

Retired my 1994 Toyota xtra cab 4 cyl, 5spd pickup in 2014 with 267,000miles. Started using Amsoil around 70,000 miles because I got tired of changing oil every month. Never burned oil. Truck had a full load with it in the entire time I used it. Worked that motor hard.

I have been using the signature series 5w-20 synthetic motor oil in my 2005 Dodge Ram 1500 (Hemi) since it was new and after 11 years it's still running strong.

I am a part time collage student getting my certification in auto mechanics, my engine seems to run quieter and the mileage has gone up maybe 1 or 2 mile.

The typical cold engine slap noise is gone. Oil pressure stays up after engine warms up and fuel mileage continues to climb. Do not hesitate to buy this oil. Mobil 1 isn't close!