Customer Ratings & Reviews

I’ve ran this oil for 100,000 miles. Car has 140k now. Lexus - 3.5. 5k oil change interval. Oil analysis has been well below normal wear averages since the first 5k, which was done at 45k. “Basically half” Although I can’t say whether the extra money is worth it for Amsoil, I cannot argue about the results. Amsoil filter, all other fluids I stick to stock Toyota OEM. The wear results make me want to switch all my vehicles. But…. “I have also cleared 300k on numerous Toyotas/subarus/ 1 ford/ with other brand oil”. The main difference is the analysis results tho. Just change your oil sooner than later. Great product, great delivery, always available, results.

I highly recommend Amsoil signature series to anyone who wants to run the best of the best in their car! My 2019 supercharged Mustang GT consumed Mobil 1 oil like it was water, amsoil is little to no loss. Car feels much better and is much more quiet as far as all of the coyote ticks. Highly recommend!

Amsoil is top-rated, top-tested, among the best products consistently. I get peace of mind with Amsoil protecting my engines. I know the quality I am getting with Amsoil and that's why I use it in all my vehicles and machinery. The extra protection, the stability, that's top quality

Changed at 5k and the engine internals very clean

I am a retired auto mechanic of 50 years this oil filter is the best on the market. I only trust Amsoil products for my vehicles.

Bought myself an Explorer ST about 2 years ago. Everything that I have read, they say to check all the factory fluids because some are sent out low. Needless to say, mine was in that group. So, ALL fluids have been changed, 2 diff's, transfer case, trans and the engine every 3k, I do lots of city driving so I change it at 3k. Anyway, I use Amsoil in all 6 of my vehicles, and all vehicles are happy.

I bought a new truck and for the first time in my life I was lucky enough to be able to buy a “top trim” fully loaded model. I plan on keeping this truck so I figured it deserved a top trim 100% synthetic oil.

Been using this for 25yrs. Never replaced a valve stem seal, any seals, just does exactly what ATSM tests shows and Amsoil claims. The only PAO based oil for the general public and easy to get.

I am switching my can am spyder and the dodge 5.7 to the 5-50 signature series oil. It is rated about the oils I am currently using. It is also slightly cheaper when purchased by the case.

I have been running Amsoil products for over thirty years and they have never let me down! This oil holds up through all extremes and after 6k miles on it almost drains looking clean. You cannot go wrong with these products. It only cost a little more to go first class!

About a month ago I got my pickup back from Hennessey Performance. They lifted it 6" and installed a Whipple supercharger on it. The recommended oil to be used is 5W-50. I have heard Amsoil is the best oil out there, and Hennessey recommended it as well. I have decided to use Amsoil in my Ford pickup and also my Audi car as well. I change the oil every 3000 miles or so and will expect the oil to work it's magic throughout the life of the cars. I will let you know how it works out.

Got what I wanted in a couple of days. Amsoil is the best

Great products, I’m a customer for life

I love this product just need free shipping more often

Very good product, just need free shipping with smaller purchases. More often.

it's the best engine runs very good

I have been using Amsoil products for a few years and am completely satisfied with the quality and performance of their products.. Thank you, team Amsoil, and keep up the good work.

Since the first change oil i made with AMS oil i notice the engine of my car is more quiter than before and also gets more mileage than my older engine oil i totally 100% recommend to all my friends👍👍👍

I have been using Amsoil products now for about 4 years primarily in my wife's Subaru. I use Amsoil engine oil and the CVT oil for the transmission and honestly the CVT oil cost me less than the CVT oil from Subaru. The only reason I don't use Amsoil in my other vehicles is because they are all older and they all use oil but for newer vehicles it's the best thing out there.

I haven’t found a product that holds up to the extreme conditions of a direct injection, turbocharged engine. Signature series oil retains its ability under high heat to provide superior protection. Lesser oils evaporate and shear under pressure, oil is inexpensive compared to an engine rebuild. I can’t recommend this product more.