Customer Ratings & Reviews

I have been using Amsoil products for over 20 years, From Gasoling, Deisel, and 2-stroke and 4-stroke. This is the best oil on the market. Been using this particulare oil, Signature Series in my wifes BMW, twin scroll turbo in-line 6 since new. I run it 10K miles changing the filter at 5K. Cost is about $100 per change. Car has 225,000 miles and runs perfect and does not use oil, maybe a quart per 10K which is nothing. I have never and will never have an oil related failure I can guarantee that. It may cost a little more but its worth it. All my friends ask me when am I going to become a dealer.

Finishing up my first 5k on Amsoil 0-20 Synthetic in my 2015 Lexus GS 350 AWD. I replaced front differential and rear differential at the same time as the engine oil. The car had 77k on it in September 2022 and is now right at 99k in early July 2023. While the car was serviced well according to records the differentials don't appear to have been changed. No real difference in drivability than before but simple peace of mind with good quality full synthetic oil. I have notice 1-2 mpg better in fuel since the oil change but could also be related to spark plug change out along with new OEM air filter. Car is in overall good condition but I would like to run it to 200k and believe Amsoil will be part of that.

Hands down the best Oil I’ve used. Noticed the performance and fuel economy boost. I will continue to run this oil/products in all my vehicles for ever 👍

I’ve used Amsoil Signature oil for years now in all my vehicles with excellent results. Engines keep running perfectly with seemingly no wear and never any oil consumption even with extended change intervals.

Been using it for years. Great oil. Tundra has 129k miles. Never misses a beat.

I just changed my oil at 5000 miles and really like how Amsoil has been working.

Have used Amsoil for many years now. My engines have gone many thousands of miles without a problem. Great product!

As usual great service delivery etc using a soil for a long time in my cars and motorcycles great product

I switched from Mobile One to AMSOIL Synthetic SAE5W-30 Motor Oil three years ago in my C5 Corvette and have found that subsequent oil changes at 5,000 mile intervals revealed much cleaner oil when drained then at the same interval with Mobile One.

This oil is an amazing product. My engine runs cooler, performs better and my oil changes are further apart then compared to using other name brand synthetic oils.

Have now converted all my vehicles to Amsoil I see improvements regarding engine start, operation, as well as Mpg Buy It

I switched from Mobil1 to Amsoil Signature oil after seeing test after test and multiple reviews showing its superior quality. When quality matters and you want to take care of your equipment, use the best. It’s a no brainer.

I was surphow much smoother and quieter my engine runs after using this oil.

Car runs smoothly, oil went longer but still looks clean and new.

So I have been told that this is the best oil on the market by many people. Decided to try it out and I will say my motor runs better and the infamous 5.0 tick is no longer there. Great product and will continue to us this product.

Love this oil, My engine runs great on this oil. 137.000 miles and purs like a kitten.

My car is noticeably more smooth since I made the change to amsoil. Been running amsoil in my harley for years and decided to try it in my car. Recommended!

Best 5w30 on the planet..

...you're going to want Amsoil in that engine. We have had three; two 2013 and a 2016. The first 2013 wore out at less than 65,000 miles on Mobil 1 and that's good oil. The second 2013 engine was a brand new rebuild and it started making a hellish noise from the front of the engine after around 30,000 miles on good quality synthetic oil and I put Amsoil in it. It quieted right down. The 2016 was beginning to make a lot of engine noise around 45,000 miles and just like the other two, good quality synthetic oil was used with 5K oil change intervals, but when switching to Amsoil it quieted right down...and the used oil analysis' improved too. I'm sold. I'm even in the process of switching my Toyota Tundra over to all Amsoil fluid.

I run it in my F250 gasser. And improve the miles per gallon some but I love the extended oil changes and the oil looks so much better.