Customer Ratings & Reviews

I've used many motor oils in my cars, but AMSOil has proven to me that this product is worth it. I use the European formula for my Porsches and Audis and Signature for my other cars. I believe these AMSOIL products are the best oils on the market. Most of my cars are turbocharged and I run them pretty hard. I'm more concerned with wear and oil viscosity breakdown in the the turbo bearings vs the rest of the engine. Not only has AMSOIL protected my engines well past, 150k miles, cylinder compressions are still great and minimal, if any, oil burn-off. I do 5k (max) oil changes and even if AMSOIL cost me $25-30 extra per change, that's only a $500-600 premium per 100k over most other brands. I know I've saved 5x more on repairs I didn't have to do because of the engine protection from AMSOIL. The motorsports shops I use keep trying to sell me on other brands like Motul, Redline, Liqui-moly, & others, just because those are their "house" brands. They can't prove to me that they are better. When I give them my personal stats using AMSOIL, they usually shut-up. Most comparison tests that I can find also lead me to the same conclusion, use AMSOIL.

I’ve used amsoil products for years and from my personal experience I wouldn’t use anything else in my vehicles. Shipping is super fast, 1 to 2 days for most items and site easy to navigate.

Love it

In my opinion, The best oil on the market for diesel engines.

Excellent oil for year round use in Washington State, seemed to make the engine a bit quieter.

I use this in our 2008 MB R350 4matic. Full SAPS for the best protection, MB spec 229.5. At 165k miles you can see right through the oil on the dipstick. This oil starts up quieter, and the engine seems to rev more readily. I use 7500 mile intervals (MB recommends max 13k under ideal conditions) due mainly to the tough environment here (hot summers, cold mornings in winter, often dusty conditions, 30-40 degree daily temp swings etc).

I have been using Amsoil engine oil for almost 20 years. In my turbo charged Audi's, Amsoil holds up better and burns off less than Mobil One. Amsoil, the First in Synthetics! Sign up for the annual membership and enjoy big time savings! Terrific value for the Best in the Business, Amsoil!

Had to open top of engine to replace PCV valve (preventive Measure) at 125,000 miles. Top of engine clean like new -- no sludge or varnish anywhere. Change this oil each year less than 15,000 miles.

My GTI and Mercedes low this oil. VW says Castrol only but this is as good or better! I'm trying to get my VW/Audi mechanic to switch!

I only use AMSOIL Fluids in my cars because of how well made they are, especially the Signature Series.. Now if only AMSOIL can create a European Signature Series Motor oil for my car, then I'd be 100% Completely satisfied. 😁

Have used this oil for several years on multiple Volkswagens in the family - both gasoline and diesel. Meets all VW factory specs and keeps everything running smoothly. Put my Amsoil sticker in the engine compartment to cover up that (ahem...) other oil mentioned by the factory. 👍

I am an Amsoil man. Have been for many years. Product is superior to all.

Awesome product !!! The Best !!

great product 👍