Anywhere I use oil or fuel treatment I use Amsoil only excellent product

Good oil fast delivery I use amsoil in everything I own

Great oil for my 04 6.0 power stroke!

I put this oil in my 05 f350, 6.0. Immediately it reduced the clacking in my motor. I believe it's running more smooth too.

My truck runs smoother and less engine noise

best oil money can buy

excellent oil for me Diesel pickup easy starts ebven in the coldest of days in the winter and excellent protection

Considering the cost of a Diesel PU using any oil less than the best seems dumb. Never had any trouble using Amsoil.

This is a great Product (possibly the best) oil available I have seen the results first hand using amsoil in my chainsaws / mx dirt bikes / and my diesel truck. You can see the difference in quality right away where other oils are thin and watery amsoil is still holding it’s viscosity with over twice the length of time of top leading oils that are synthetic or not I became a believer after running it in my 2019 kx450 after running top synthetic oil before amsoil and running amsoil after it became clear that amsoil is superior to any oils I have ever used where I had to change my oil ever 7 hrs maximum amsoil goes beyond my oil filter time life of 15 hrs which is ridiculous amount of time for a kx450 I run amsoil in all my personal vehicles

Only oil I run in my 2008 F 250 6.4 which is still stock at 170,000 miles. It improve my fuel mileage and run cooler. I also run this in all my tractors best oil on the market.

This is the best oil on the market today and has been for 20 years.

This is the best oil so far n market . Don’t forget to get filters too

This is the first time I used this product. I think my Duramax runs quieter with Amsoil. Like how I can get 10 quarts in one jug.

I have a 2001 Duramax 2500hd that has had Amsoil since the first oil change. It’s got 300k on the odometer and runs like a watch. No oil consumption between changes (7500 miles). I believe the lubrication Amsoil provides is the difference.

Been using other oils, but as soon as I put this on in and ran my truck. There was a noticeable difference in sound . Motor seemed to like it. Will continue to use amsoil.

The only oil I'll use in my truck . Fast delivery everytime I've ordered and always received what I ordered.

Amsoil is the best synthetic oil!

Wouldn't use anything but AMSOIL

I've been running this in my 6.0 I choose this over the signature series because I just can't get myself to go over 5k miles on a heui injection system and didnt see the need in the extra money for a 25k oil. Truck runs smoother with the amsoil.

15w40 diesel is all I use in my 2500 Sierra Duramax Diesel.