By 
Berto, 
a 
Verified Buyer 
from 
So cal 
on 
March 17, 2022
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.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Best oil on the market for your diesel truck.
By 
DAVID, 
a 
Verified Buyer 
on 
March 13, 2022
The only oil I'll use in my truck . Fast delivery everytime I've ordered and always received what I ordered.
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.
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.
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.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Excellent oil
By 
AL, 
a 
Verified Buyer 
on 
January 07, 2022
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!!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
good oil for my l5p
By 
ERIK, 
a 
Verified Buyer 
on 
January 07, 2022
great oil and fast shipping got to my door steps in 2 days keep up the great work Amsoil
By 
Kyle J., 
a 
Verified Buyer 
from 
North Dakota 
on 
December 15, 2021
Great oil always changed the engine oil at 15k miles with the 6X and now I use 4X and change it at 10k miles. Oil samples come back great. '10 Ram with a Cummins 6.7L- Been using AmsOil on it for 120k miles still going strong!
Bottom Line
Yes, I would recommend this to a friend.
Was this review helpful?
5 star rating
15-40 diesel oil
By 
RICHARD, 
a 
Verified Buyer 
on 
December 12, 2021
Been using this oil for awhile and seems to run a little quieter. Extremely happy with this product.
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