Customer Ratings & Reviews

My truck runs smoother now since I’ve started using Amsoil

This oil is just as good as all their signature series oils.

I own two Hyundai Elantra N’s and changed oil on both at the same time. One had factory oil the other Amsoil. Sent samples of oil from both to Speediagostix for analysis. Reports came back showing superior protection from Amsoil and I am getting 1 mpg better with Amsoil. The oil stands up to its claims.

I’ve been using Signature Series engine oil in various viscosities for about twenty years. I change my oil at 15,000 mile intervals and have zero engine problems and at 100,000 miles on most of the previous cars and trucks I have never had to add any oil between changes. The inside of my engines are as clean as new, and there is no evidence of the brown varnish that coats the internals of the engine that is evident with most engine oils these days.

Though it only been a few hundred miles. I’ve noticed at least a 5% increase in fuel economy. An overall reduction in engine noise from engine start up to warm up. Will continue to use Amsoil till this car hits the bone yard or a really good trade in.

Great oil, have used it in for cars!

Really like this in my older Chevy truck to extend the life of my engine. Highly recommend.

It's the best oil that I've used I tried Mobil one and it's okay but after using Amsoil and looking at the color of both oil Amsoil was lighter than Mobil one after 5,000 miles on both it was the final decision for me Amsoil all the time.

I have been using the signature series almost 4 years on everything I own. Small engine, big engine, and the fuel storage. And it's never let me down in any way. Way past my expectations and more. I will continue to use these products forever

I've been a preferred customer for about 5, 6 years now been using Amsoil for 15 years All their products are great I use them in my Subarus used them in my Toyota's my Hondas and my son's Corvette They make very good products to stand behind every one of them very good products.

Happy

I started using this oil due to the GDI turbo KIAs blowing up due to the silent knock/detonation inherent in the 2.0s. So far so bueno.

great product

Car just purrs with this oil!!!!

Short & to the POINT. I have been using AMSOIL for over twenty years , its the BEST, I have 3 vehicles & its the only oil I USE. OUTSTANDING OIL !!! SgtMaj

great oil for the high out turbocharged mustangs

I have been using signature in all my vehicles for awhile

Excellent product. Superior quality compared to other brands. Only issue is that that the vehicle kit comes with 7 quarts, when my vehicle only requires 6 quarts. 2023 Bronco 2.7

I have used Amsoil for 15 years. I have tried them all. Ansoil extends my change intervals by over 2000 mile on each change ( according to the truck computer) the only oil I use

Changed in April 2023. Engine seems to run quieter. Had to use pan plug gasket over again as forgot to have one on hand. Developed drip from plug but no other leaks showed up.