Customer Ratings & Reviews

Independent testing and laboratory independent testing both confirm by a measurable margin amsoil is in fact the best oil on the market. It is not snake oil it’s truly the best at film strength, anti-wear additive package, total base and TBN anti-acidification properties are superior than any other brand yes including the purple bottle.

Only oil I use in my 06 h3 and she still runs like new!

Best oil out there by far!

Outstanding product, protects moving parts as advertised, never had any issues using this product. Beside that always had excellent service from my distributor and Amsoil.

The 5W-30 signature series is a great oil for my HVAC work van. Chevys need all the help they can get to keep the lifters from ticking. The AMSOIL does the trick.

After waiting two years to take delivery of this new Bronco . I could only seriously consider using the best synthetic oil on the market. With wear and heat protection needed for the twin turbo motor is a must; especially in central Florida's warm and humid climate.

I have always run AMZOIL in my vehicles and have found that they seem to rev smoothly and effortless, keep engine cleaner, and definitely improves fuel economy. Been using it since 1981

I highly recommend it, from motors to gun, thanks for the most protection.

Cost more than the other brands but we'll worth it. Especially if you are keeping your vehicle(s) for many years

WHEN I CHANGED THIS IN MY JEEP MY MPG WENT UP 2 MILES PER GALLON

Having never used synthetic oil before, I can only give my thoughts on what I perceive to be the quality of this oil and my perception is that this is the highest quality synthetic on the market. Pricey yes, but when you consider the suggested time period between filter/oil changes, it's a wash money-wise for a far superior product. I have a 2011 Tundra 5.7 that mfg and AMSOiL recommends 7.9 qts. I bought 9 qts just in case. After adding 8 qts it was still 1 qt low. Good thing I bought 9 qts because it took it all.

I use Amsoil products for everything on my ZL1, I would almost say it gives me a little more power an definitely the best protection hands down 💪🏼 Running Amsoil I’m not worried at all when I hammer down hard on it 🔥. By far the best money can buy if you want to be number 1 💪🏼 I now run Amsoil in all 3 of my vehicles 😅 Thanks for making a superior product

It does everything I want and more ! Nice to have such good protection that you don't have to worry if you go a bit over on changes !

Have been using Amsoil for 40+ years always my first choice.

Quality product.. use in 3 vehicles

Great oil, Jeep runs a little cooler than the original conventional oil came with.

Good oil good service. Would be nice if you just included funnels with each oil purchase. For what people pay for oil, it would be a great item to just give to customers. They are almost always necessary

My 2014 Chevy Impala Limited loves AmsOil signature series. My engine is running considerably quieter than when using Valvoline. Waiting to see what it looks like when I'm getting closer to an oil change to see how much oil gets used vs Valvoline. If you care about your vehicle and want it to last a long time, make the switch to AmsOil Signature Series!

Great motor oil! Have been using it for years in a 2013 Acura TL.

Great product will always and forever use it