Customer Ratings & Reviews

Absolutely love this stuff I run it in my 2006 Saab 9-3 and my 2003 Saab 9-5 and they run like a dream cousins ask for anything better.

In my cars there’s only 1 oil that goes into, AMSOIL....this says it all.

With modern engines maintenance is the best preventative service a vehicle owner can do. Heat control and lubrication are just two of Amsoil qualities. Repairs are very expensive so maintenance can be your best investment.

This oil is a very good product, get very good mpg and engine protection. Will always use it only one for me

Here in Indianapolis Indiana, during winter temps can get below 0, Seems to flow very well at cold startup.No cold start ticking like with my old oil.Thanks

The Best..!!

Been using this oil for over 30 years. Would not use anything else.

The products are great, but the price of membership plus higher oil prices are too much. There needs to be a compromise. Lower your prices could increase sales.

Put 5W-30 Signature in a 2017 Volvo (for ACEA A5/B5). True story: The morning after first snowfall in my apartment, I scraped the ice off of my windshield but did not bother to clean snow off my hood since it would usually fall off of my car while driving in previous winters when I got up to speeds of 60-70 mph due to engine vibrations and heat. Amazingly, in my first winter drive with Signature Series, the snow did not fall off of the hood and stayed almost entirely intact on the whole drive even with highway speeds and steering. Furthermore, the engine did not burn a drop of oil in the first 7000 miles of use. The engine is a turbocharged inline four, so high engine temperatures and vibrations are normally problematic. Cruising RPMs dipped by 200-300 as well (from 2000 to 1700-1800), which is another issue for inlines. The product works, period.

Great oil. I use it in my twin turbo h/o 3.5L Ford .

I’ve been using Amsoil products for years and I will continue due to the quality and success I’ve had with Amsoil. I use Amsoil in and on, everything I own.

Signature series is the best!

my first year using Amsoil products in my car and small engines. so far I cant complaint .I really notice the difference and will continue to use Amsoil products.

This is the oil I use and trust in my 2019 Dodge Durango 3.6L. I never reach the 25K mileage, but I do change it at 1-year intervals. Hopefully, in the coming year, I'll be able to put more mileage on the Durango.

Oil keeps my engine clean inside even with 25,000 mile oil changes. At 17,000, the oil looks extremely clean on the dipstick and wiping cloth.

There's a reason car/racing enthusiasts use Amsoil. It's the best protection you can buy for your car. 6K change intervals drive the benefit home for me; with other synthetics I was changing every 3K no matter what the recommendation. Amsoil Signature Series gives me the confidence to run up to 6K miles in between oil changes, and my motor is happy as can be.

I changed the oil in my 2004 Mach I Mustang from the manufacture's suggested brand to Amsoil Synthetic 5W20 SS. The first thing I noticed was the smoother engine idle. Also, during gear shifts at slow speed, there is a noticeable improvement in the engine's response. I did not put the car on a dyno to check before and after HP and torque, but it feels as though it has more torque with Amsoil. I will stick with Amsoil.

Started utilizing the Sgnature Series Oil in my wifes 2014 Hyundai Tucson and I have noticed a big difference on how her vehicle start up; especially on cold mornings. The Hyundai is getting better gas mileage and I definitely would recommend this product.

I've been using Amsoil products for a long time now. They're great products and with the extended drain intervals it really is cost effective to use this over conventional oils.