Customer Ratings & Reviews

I have been using Dominator Racing 15w50 since i built this engine in 2013. Approximately 400 hundred drag races . This spring removed and disassembled to freshen. Found almost zero wear.

I've been using Amsoil for over 20 years. Three boats, two jet skis, Toyotas, GMC van, A class RV, Class B RV.

Quality is excellent. Bought it for adding during hot weather. Recommend this oil to any one.

Quality is excellent. Bought it for adding year around. I am recommend this oil to any one.

I got introduced to Amsoil in 1978 I built strictly race engines four and two strokes . I am on my 56th year of building raceengines. I’ve yet to find a better productproduct. It’s the best you can take that to the bank.

I've bought this oil for adding to crankcase oil. Quality is high and this oil will serve very well to enhance general quality of all remaining oil. High TBN ( 8 ) will allow use all oil to the reasonable end.

I've bought this oil for summer time adding. 500 cm3 ( 500ml ) above normal level will not hurt engine, but will effectively decrease engine temperature. I do believe in AMS quality and recommend this oil every one.

Running 10w40 Dominator in my King Motorsports-built turbo Honda D16A6. Great combination, noticeably quiet with less forged piston slap on cold starts. Has really consistent shear stability for higher revs. I run Pennzoil ultra platinum in my daily drivers because I do frequent oil changes, but anything I own that sees fewer miles per year gets Amsoil!

Never used Amsoil Race oil in my EVO 9 2.2L 4G63 7 bolt stroked engine aftermarket turbocharged full race prepped! Just got it on a dyno last week and it made 5 additional hp! We ran It 4x times and each time it made the same increase! Amazing! Stayed temperature stable too, normally on the dyno it gets a little warm. Awesome engine oil!

First time using this product but every person I've talked to said the oil is awesome. Ill be seeing for myself to verify. Im sure I want be disappointed.

Outstanding service, best products since the 1970’s

My engine builder recommended it. I’ve never had an issue and I’ve never looked back.

Oil products are top of the line. Service is excellent and effecient.

Excellent quality oil. Strong oil film. Recommend everyone.

This oil was recommended by the engine builder it works great.

Love it

Decent price fast shipping. Struggled to find locally as needed fast for oil change on race car. Spent more time checking local stores than it took to ship.

I’m a numbers guy and do a lot of UOAs and tried this in a non standard application (6.4L Hemi). Other than some oxidation thickening occurring around 7k miles, my wear numbers are a fraction of what they were with the 0w40 Signature Series and the valve train is a lot quieter. I have heard the Hemi tick since switching. Will definitely be sticking with this oil.

Awesome Products. Oil change intervals are longer than before and it protects components like NO OTHER!!

Amsoil oil products have been excellent. Run the Doninator motor oil in an eliminator boat with twin 528 quad rotor whipple supperchargers. Run Amsoil gear lubes in both motors as well. Amsoil has an excellent quick and efficient delivery record with me as well. Thanks to there personal and products