Customer Ratings & Reviews

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.

Purchased this as a preferred customer, I never thought I could afford Amsoil but this was less than Mobil1 from ChinaMart.

Started using this after truck had about 120,000 miles. Since new, truck used a quart of oil at 3,000 miles. No more oil consumption and truck runs much quieter.

It the only oil I use in my diesel

Can’t complain as of yet. Got 15000 miles on truck do oil change every 5k so far so good

Good oil, runs well in my 6.0 psd

I use the Amsoil oil in my John deer tractor I use Amsoil in all my motors.

I have used the DME on 6 different GM 6.6L diesels, and have never had a problem. I towed boats with earlier trucks, and now farm use with the current truck and the DME is an outstanding oil for this engine.

I have used this oil in my 2002 diesel truck for many years and won't change.

I always used valvoline premium blue then I tried this stuff 1 time and I’m hooked I have literally swapped all fluids in all my vehicles and toys generators etc to amsoil even my family members have switched to this oil in their vehicles I even used the quick shot fuel additive in my 44 year old truck and it woke up that old Quadra jet carb! Don’t hesitate to buy this! I am in the process of putting their dirtbike oil in my dirt bike at this very second!!

great oil and fast shipping got to my door steps in 2 days keep up the great work Amsoil

178,000 miles and still going strong in my 2012 F350 4x4. Amsoil is all I use on my Truck.