Customer Ratings & Reviews

I have been using Amsoil products for 18 years. I started with my 1998 Chevy K1500 Suburban which I bought new and started using Amsoil oil when it had 38,000 kms. It now has 423,000 kms and is running as strong as the day I bought it. I firmly believe that Amsoil and regular maintenance, which I do mostly myself, are the reasons why this truck has lasted so long and has run so well for all these years.

Put Amsoil Signature Series 5W-30 in our 2016 Wranglers and noticed both an increase in mileage and an end to the occasion start-up tick which happened on occasion. Never using any other oil than Amsoil in the future.

always recommend this stuff

So far so good

Great oil to use all the time, 15,000 mile or a year which ever comes first saves time and money, environment too!!

I have used this oil in all my vehicles since 2006. I have a 2006 charger with 3.5 h/o it has 273,000 ; 2006 town and country 3.8 has 255,000; and a 2013 charger 3.6 pentastar which has 148,000 , which gets between 33 and 35mpg on the highway at 70mph. I change the oil filter and top off fluid at 12,500 miles on each vehicle. (High quality filters purchased from amsoil.)

This oil cause my engine to run cooler along with the great AMSOIL transmission fluid .

It is expensive, but worth every penny. Instead of replacing every 3000 miles, it is once a year!

Interval of change time is great. Better gas mileage in my pickup. Works great great product.

It seems to work. I have not analyzed any gasser oils yet but Amsoil was great in my diesels so I figure they can handle gasoline which is so much cleaner.

Great oil.

I use amsoil inn both my vehicles. Both tractors and mowers.

Used in a new Dodge Caravan and works great

I use this product in my wife's new 2017 Hyundai. Since the break-in period is over, I now use the 5W-20 Signature AMSOIL in the vehicle. The gas mileage actually increased slightly, and the engine purrs now, which is a change from the break-in oil. I will continue to use this oil, without doubt.

Maintain all my cars with amsoil

When I first bought my vehicle used, the oil changes looked super sludgy, and the gas mileage was pretty poor. After 1 oil change with amsoil full synthetic with the ea filter, it is clean clean clean and I have 1mpg better fuel mileage after a little over 5000 miles. With any other oil, it would be black and gritty looking. I also like the extended drain intervals provided with this oils capability, so I only have to change my oil once per year.

For some reason, my gas mileage went down after putting this oil in my tundra. I reset the computer at every oil change. I was using Pennzoil 5w-20 and got 15.8 mpg over 5000 mile span. I am nearing 5000 mile mark on this Amsoil product and my mpg is at 15.0

This product is the best deal in the long term due to the extended oil change and life of the oil. I use it in my Ford products

Great product. Prolongs engine life.

I have 170,000+ miles, after the 36,000 mile factory warranty ran out it has been Amsiol ever since. I use the 25,000 mile signature series with never a problem. I have to change the filter half way thru because I can only find a 15,000 mile filter, I have to add between 1/2 and 3/4 quart at this time. I always change oil around 24,000 miles unless I have been pulling my 7,000lbs for over 1,000 total between changes then for piece of mind I change at 20,000 miles. I drive a 2008 Toyota FJ Cruiser and take it off-road