Customer Ratings & Reviews

AMSOIL 100% synthetic motor oil is one of the best engine oils on the market for any vehicle. Just like how clean blood is vital to the success of how our body operates, the types of motor oil you choose can also affect the success of your motor. After 6K on my AMSOIL 100% synthetic oil, I had an oil analyst test done on the oil. It passed with flying colors! The lab indicated, for my style of driving, it was suggested I could drive 10K-12K between oil changes with the current oil I'm using. I would never go that long between oil changes; however, I usually change my oil every 7K or every 6 months. It's reassuring to say the least to change my motor oil knowing that it is still capable of protecting my motor many miles beyond.

Best oil I’ve ever bought!

I can tell my engine likes this oil, runs very smooth and my gas mileage increased.

I have used signature series oils for many years in multiple different vehicles. Several of my vehicles have high miles logged every year but we also use in a couple pickups that do not see ideal operating conditions. We have not experienced any oil related failures.

I run thin in my 6.4 hemi and have no issues 100000 km's and going

I didn't notice the order was for 5W50W Synthetic Motor Oil. My 2006 Lincoln Town Car uses 5W20W which was always on order for me. I had to use the 5W50W, the oil was drained and had no way of getting the correct viscosity oil. Also, the oil was shipped from Minnesota who charged me Minnesota sales tax and Florida sales tax. I hope this will be corrected. It's always a chance of error on online orders.

Best oil made!! I have used AMSoil my whole life. I’ve always kept my vehicles 10+ years no problem with this oil.

Best oil ever I use on all my cars I have two honda accord and a civic . I drive my car 115 miles a day to and from work car has 220000 and still feels like new.

factory oil for my car is Ford's synthetic 5w50 but I have always run Amsoil in this vehicle and it has never let me down. Everything seems better than running stock oil on my car and with it being a performance turbo car it definitely makes a difference.

Simply the best oil out there for my 150k Toyota Tundra. Runs like new.

Vehicles are to expensive to go cheap on the most important thing you put into it.

I run a car service in Boston. 2014 Cadillac XTS Livery Sedan went 596,000 miles, PLUS EIGHT YEARS IDLE TIME. I have picture of the odometer. Hard, high RPM driving. What a product!!

If you love your car, use Amsoil to protect your baby’s engine.

Extreme engine protection

Great product, highly recommend!

Best performing synthetic oil. Been using this in my Vette for many years. Noticeable reduction in heat, smooth running and protection at all RPM ‘s. So impressed that I started running it in my Pick Up and my SUV a couple of years back.

I say it’s the best ever and if you don’t trust me you have to trust Gale Banks.

With the oil my car work good and my savings is more than 50%.

After a year and 10,000 miles, this oil still looked great! The additional cost is negligible compared to the longer operating time and piece of mind knowing my engine is getting top tier lubrication and wear protection.

Thanks Amsoil for such a wonderful oil ..