Customer Ratings & Reviews

I used the recommended Rotella T6 forever, can’t get it at a decent price so I tried this and may just be the cold weather but I swear my engine is running cooler. On the highway (not towing) my oil temp would stay around 210-212, but it won’t get above 200 now unless I’m going up an incline or something. Super happy and feel comfortable with Amsoil in my Jeep!!

I’ve had three died pickups and this is the only oil I have ever used. Great performance and engine care with this oil.

have been using amsoil max duty oil in my cummins/dodge for some time 180.000.miles nd going strong

Always felt Amsoil is the best and never ever had oil issues with my vehicles while using Amsoil.

I run this oil in all my equipment and vehicles! Super Great product!

Great products. Always timely delivery. Don't use any other oil in my truck.

I have been running amsoil on and off over the years and different vehicles. I just recently bought a brand new eco diesel ram and thought this is my chance to put it though a true test... right from oil change numero unto. So far it seems to be doing good after 40,000 miles and 4 changes of oil. Will update as I get more miles

I've been using this in my '06 Dodge diesel for years at extended change intervals. I also use it in a small diesel tractor. It gives me easier cold weather starts than 15-40. I don't see any reason not to continue to do so. I run Amsoil in two generators, two motorcycles (Harley Davidson 20-50 and KTM 15-50) and run the Saber oil in my trimmers. No complaints.

Been running this oil in my 7.3 powerstroke for 200k and truck has 300k on it now. I usually ran the oil for about a total of 10k miles with 1 filter change at 5k miles, but recently I decided to have my oil tested and with changing just my oil filters every 5-6 miles. I ran the same oil for over 18k miles and it still checked out good. I do hotshot so I put on miles fast and I won't use any other oil brands.

Happy with your products. Ships quickly. Easy to use website.

Used Amsoil in my 2006 Ford Van. runs much smoother and much quieter now than previous oil that has been used. Seems to have more pick -up that before!!

Absolutely appreciate this oil product for my 7.3 diesel and the truck loves it too will continue to purchase.

Absolutely love this in my Duramax runs better gets good fuel mileage

Great product use amsoil in all my vehicles and snowmobiles should say all my toys

My truck use to go throw 2 qts of oil running rotela 5w40 in 5000 miles. Switched to ams oil and now I can go 10000 miles no oil lost. I am very happy.

Great product! Will continue using!

Gives me all the protection I need in my Duramax. Gives me better fuel mileage then Rotella

Amsoil is the best and cost effective oil I have ever experienced especially driving on average 4000 miles a week.

Great Synthetic Diesel Oil. Amsol is one of the BEST in the Industry. Trusted and time tested products.

Love Amsoil products! Fast shipping as well.