Customer Ratings & Reviews

Always buy Amsoil, actually felt like it made the engine run smoother on our new car.

AMSOIL Signature series engine oil is first rate. I have used this product in all three of my vehicles for years. I have had to add additional oil to any of the vehicles, months after changing the oil. Great product that is reasonably priced.

I have been using Amsoil Signature Series for 5-6 years now. Here in Wyoming with severe winters the flow of the Oil, my engine turns over like its 20C (70F) out when it is -25C (-10F). Even though the Oil is more expensive than the Full Synthetics the longer oil change intervals make up for the price. Before 2 oil changes for what I do with one Amsoil. Recently replaced the Timing Belts on my car and have to remove the valve cover as part. The upper engine has zero sludge and just a light golden color inside. High mileage on my Accord. Engine clean and well protected.

I have been using Amsoil for many years I used it in all of my Harley motorcycles and both my car and truck

I've been running Amsoil for years and recently changed the spark plugs in one of my 3.6l Pentastar engines. Engine currently has almost 190,000 miles and I haven't had a single mechanical issue. I also changed the intake manifold gaskets while doing the service and the top end of the engine stills looks amazing.

Amsoil products are the best! Hands down. All my rigs will allways run Amsoil products.

Having switched to Amsoil from Castrol I can tell you that I immediately noticed a smoother operating engine. Not a thought of using anything but Amsoil from now on.

Made my 2022 Nissan titan way quieter runs smoother

Works great on my 2022 Ltd Silverado

First, let's address the elephant in the room. This stuff is EXPENSIVE! Now that we have that out of the way, let's go with a more important issue. Your engine is also expensive! The tests verify that Amsoil is the best. So now the question presents itself, with such a sizeable investment (your vehicle), why wouldn't you want the best product to protect that investment? I've been using Amsoil for years, and I'll continue to do so because I don't have tons of disposable income, and I want to protect my sizeable investment. Thanks Amsoil!

Been using Amsoil motorcycle oil in my Harley since I bought it new in 2012 and it’s been great, no issues whatsoever. Decided to start using the signature 0W – 20 in my ‘21 Honda Civic 1.5 L turbo for the first time, and so far so good! 4 quart jug is the perfect amount for my vehicle leaving a quarter of a quart for top off if needed. I expect nothing but the best from Amsoil. I recommend it!

I've been using Royal Purple oil for 10 years in my Lexus. I can honestly say I am very impressed with the improvements my engine has since using Amsoil Signature Series. My engine is 50% quieter and I dont burn a quart of oil in 5,000 miles. Thanks.....

I run Amsoil exclusively in my 1986 First Gen 4Runner, the 2200RE engine, the 5 speed transmission, the transfer case and the rear differential. I have over 400K on this engine rebuild, and over 907K total miles, I love it.

A true value over time.

a co worker turned me on to this product after doing some homework. I gave them a shot & been using there products for years. My mechanic was curious too, because they don’t sell in the stores. Have been using ever since.

I use this in a 2019 Toyota Camry. I still do the oil changes at 5,000 miles instead of Toyota's recommended 10,000 due to fuel dilution and mostly short trips.

I just started using this in a Lexus SUV. The owner plans to keep the vehicle for a long time. I wanted to use the best oil I could to help with that.

I’ve been using AMSOIL products for years, and they’ve consistently performed exceptionally well. My 2019 Subaru STI runs on 5W-30, and my Subaru Forester uses the harder-to-find 0W-16—AMSOIL has reliably met both needs. I’ve never experienced any issues, and the level of protection their oils provide is outstanding. In my experience, AMSOIL is one of the best options available.

This weight is much better than the 0-20 that GM recommends for the 2014—2018 6.2liter.. Better gas mileage, better lubrication.

We use this oil in all our 3 Hondas. We would not use anything else