Change it every 1,000-1,500 miles for my turbo LS daily driver.

My truck runs smooth and fuel mileage has increased.

Great Product I run in my Built Evo 8.

Definitely will Purchase again

We all know it’s the good stuff. Shipping was fast.

This product works great in my race engine.

If you're looking for an oil that provides the best quality and protection in the industry well Amsoil is it.

Excellent Have Never blown up a motor using this and doesn't slow down on the hot dyno runs

Love the product, run it in my classics and newer car.

I’m so glad I turned to 15/50 racing oil in my new build. It’s holding up great to the high RPM.

this is the ONLY oil I will run in my race car period. a few years ago I got cheap and started using a competitors oil and started having lots of little oil related problems....opened my eyes to what was happening and went back to my Amsoil and all those gremlins stopped. true story

We've been racing Dodge Neons for 15 years now. We used to blow 1-2 engines a year from spun bearings. He have not spun a single bearing, nor blown an engine in the last 5-7 years, since switching to Amsoil. We use 10W-30 Dominator in our engines, Syncromesh in our transmissions, and the high temp brake fluid. Our local rep, Andy Bolton is already there for us if we need quicker than we can order on-line. Because of our racing success with Amsoil, I use it in all of my (3) street cars, and all 5 of my son's use it in there street cars and trucks as well.

Use this on my drag car. Worth every penny suburb performance enhanced engine acceleration and response

Only oil that keeps up in my 2015 Cammed Camaro SS/RS where a zinc additive is required. I run over 3K rpm daily in normal driving mode. Have had zero issues with oil and keeps engine clean. It does break down under high load over extended periods. For me roughly every 3k miles I need to add a qt, remember I run high rpm daily so this is normal.

It contains the ZDDP (ZINC AND phosphorus) that my Texas Speed and Performance motor requires.

Easy ordering, fast shipping and a great product

I needed a high V oil for my 448 cu. in. Hemi it runs hot and the summer here in in PSL FL is HOT ! so I am trying to reduce heat soak and hold max oil pressure so far so good but wont know for sure till next summer

I purchase this oil for our Altered Drag Race Car! After a 3 day racing event. I drained Oil and I see no abnormalities. I then isolated some oil in a clear vial and let it sit . The next day I checked and it seemed to have the same consistency and clarity it had when I first installed. So I reintroduced it in the engine and getting ready to race the car again next weekend. But will keep everyone posted! At this time I can't imagine using anything else!

Very stable oil that could be good for any high performance application. Just wish it contained detergents and additives like the z rod line for longer change intervals for those of us who want a single weight oil.

Best oil I’ve ever raced dirt track with. Last long time and does not break down. Hardly any wear on engine bearings over complete season.