Customer Ratings & Reviews

I have noticed less regens while using this product. Also my DEF is lasting longer as well. The MAP sensor just went 55k miles before getting plugged up with soot. The first time was at 22k miles on Original Equipment oil. Increased mpg as well about 2 mpg better.

Coming back from a round-trip CA to TX and back, then 60 miles from home had turbo problems on my 2014, RAM 3500, with 61K miles. We use the pickup about 80+ % of the time pulling our fifth wheel trailer. The local RAM dealer did the repairs and made a note on my receipt, that from what they could see, we had an exceptionally clean looking engine interior. Except for my original oil when I got the truck, it's had Amsoil 15W-40 ever since.

Owning and operating a horse park, we have dozens of diesel engines from small to large. Amsoil has become our go-to oil for all our engines. Not only do the engine run quieter, less consumption and we have been able to extend our drain intervals (verified with oil analysis). We even use this for our fun bracket racing engines. Very pleased all the way around.

great transaction , great product

Oil change every 5k, it’s served me well.

10/10. I have been running this oil in my truck since new. Pushing 300k km and it still doesn’t burn a drop of oil in between services.

Keep my business running without a worry

I never worry about oiling issues with my John Deere 2320. I've put an increasing number of hours on the tractor in recent years which I use for a combination of very hot weather/ conditions pasture mowing, chipping, snow removal and logging. My usage ranges from low speed operation in colder weather to high rpm PTO usage for chipping and pasture mowing. Logging requires a fair amount of idling then low rpm winching and mid rpm heavy pulls and pallet fork usage for stacking logs. I change my oil once a year (50-150 hours depending on the year) I don't abuse the tractor but it's working hard every time that it's running. I worry about breaking parts on it but I never worry about engine lubrication.

Great product fast shipping

Run 35k changes on the cummins running this a amsoil ea080 and the amsoil large bypass system. Last truck got 1.3 million miles on all original cummins 6.7 engine .

I am so pleased with this oil for my truck.

I have used this oil for the last 10 years in a 2015 duramax. I work the truck every day and have 209k miles on the truck. The truck doesn’t use any oil between its 7500 mile oil changes and still runs like new. I recommend giving it a try.

I used Amsoil in the 1980’s back then you had to know someone that sold it. Now we can order it online, it’s costly but I use it until I reach 12000-15000 miles which is usually about a year and a half. I trust the brand. I keep a spare case on hand.

Good clean product.

Great oil , no complaints , it even got rid of the classic duramax type writer tick ! I'll never use another oil in it now that I've used this

Always a pleasure Pays to be a member for discounts My goto products

My 3500 Ram HO definitely prefers the 5W-40 over the 10W-30. It runs noticeably smoother and quieter with 5W-40.

My 7.3 diesel loves this stuff!

Been a long time Preferred Member. This is my first diesel vehicle. I have trusted this oil in my gas engines for 25K change intervals. I will trust this oil in my diesel.

Only the best for my G3 RAM. Original turbo, no oil issues. 125k miles. What is not to like?