Customer Ratings & Reviews

Amsoil had been the best oil that I've been using for years. It started with one vehicle. Eventually put Amsoil oil in all cars. This oil has helped keep engines running cooler, fuel efficient and more.

I am confident that Amsoil synthetic is a superior lubricant and have been relying on it for years.

Have used in my vehicles for over 15 years. The best!

No issues whatsoever the synthetic premier blend works terrific on our WRX

I’ve been using this signature synthetic annual or 25k mimes oil change since 2012 on my two Subaru’s and I love it I think it’s the best never had any issues with my car and it’s noticeably smoother with this oil. I will never use another brand as long as this is available.

I use AMSOIL in everything that has an engine. The best true synthetic oil on the market

An Amsoil customer since the mid seventies. I never switched for a reason; it's the best lubricant money can buy. My power equipment is subjected to extreme conditions of heat, dust, and hard work, and Amsoil has never cost me a minute of down time. You get what you pay for.

this is great oil for my motorhome

I've been using this in my 2014 Ram since new - right after the initial break-in oil was done. Engine runs perfect. No issues. Hoping to see many more thousand miles in this one using this oil.

i have purchased amsoil products for many years and has never disappointed. Quality product made for the picky gearhead.

Worth the extra $$$. My car feels and sounds healthier on startup and throughout the daily commute and the occasional weekend drive. Will continue to use this product

I went 7000 miles using 5w-30 Signature Series an EA filter. When I changed my oil I took a sample and sent it to Blackstone Labs, and the results were amazing, especially for a 123k mile car. They even recommended me to extend my oil change interval out to 9000 miles.

Save money, when topping off your oil change with this product, than buying by the quarts.

First time user

Everything was good but asked for do me free swag to put all around my shop, I do work on other ppls vehicles and would like to start using your products more so would like to show off to u the company, I already bought a big banner off eBay for my shop

I recommend this oil to all my friends n family. Have ordered already 3 cases since the beginning of summer.

Great oil just too expensive

used oil for many years, had very good results. Great oil....

this product has given my jeep the protection and peas of mind I expect of a good product for rugged use of my vehicle am very satisficed.

I put this oil in a low mileage 1500 Ram 5.7l hemi. The truck was running a purple oil that was pretty good but at operating temp with a tuner (180 degrees) there was a lite tap of lifter plungers. Using a scope to listen, after a couple hundred miles I checked again and nothing, the engine seams to run smoother as well, I will keep using this oil as I am confident the reviews are real after witnessing minimum viscosity break down. You have to try it to believe it.