Customer Ratings & Reviews

Been using the supreme protection for years and no problems at all

There is no better oil than AMSOIL Signature Series oil. I've been using AMSOIL for 30 years and it has always been exceptional. I will never use any other oil but AMSOIL - period !!!

My engine never run so smooth!

Been using their oil in all my diesels.

This engine in it's beginning back in the 90's was spec'd for 10w-30. In my opinion, the debatably worst decision Chrysler ever made will quiet down and run buttery smooth. It's not going to turn the torque-less wonder into a powerhouse, and your mpg might drop a fraction of a percent but come on, you're driving a vehicle with the aerodynamics of a refrigerator box. At the very least, give your mini-van engine the oil it needs.

Love this oil and my car loves it

I only changed my oil every six months. I never put more than 8000 miles engine is absolutely clean not a problem all good.

Just cheap insurance policy, knowing that you have the best oil out there in your car especially new cars with turbo i’ll spend the extra couple of bucks to fill my car oil reservoir with Amsoil signature series

Amsoil makes the best oil for your vehicle hands down. My 4runners love this oil!

Awesome oil for all the vehicles. Runs like new.

I use it because it never let me down yet ! simply saying I use it because it works

Would be nice if it came in gallons

Ever since switching all my vehicles to AMSOIL I have noticed a difference in performance. Great product definitely recommend if you want your vehicles to last.

I've run Signature Series specifically in my turbo DI daily driver because of the protection it offers against LSPI that plagues these engines. It's worth every penny knowing I'm running an oil I can count on.

I love and trust the quality of the product for all of my engines. If Amsoil sells it for my vehicle, I'm using it, and i know it is protected. I just wish it wasn't as expensive, but it is what it is. Great stuff. I love it overall

Use Amsoil products on both high my mileage gas and diesel vehicles.

Ordered another 12 quarts of America’s Best Oil for changes on my Raptor and Bronco. I won’t run anything else, and being a preferred customer bringing the price down, makes it even better!!! No complaints from me whatsoever.

I just switched from Amsoil Euro to Amsoil Signature Series for a 2023 VW Taos. I ran a used oil analysis at that change and the wear metals are 3.7 ppm/1000m. The SUS viscosity is spot on. I have been changing the oil at about 5k miles. I completely trust Amsoil to protect the engine for a long time. That is not an easy job with a small turbo 4-cylinder, DI engine. I am also going to extend my change interval to probably 6500 miles this time and do another used oil analysis. I am going to standardize Amsoil Signature Series on all my vehicles. Not to mention their customer service is great and I get the products quickly. Thank you Amsoil!

Hands down best there is!

I am really happy with the quality of the signature oil. They are supposed to send me a multi tool for free but never got it. I called customer service and they didn’t resolved the problem.