If you use your truck as a truck and not a grocery getter this is the oil I would recommend. This oil holds up good under heavy towing a cool off times. The lower grade heavy duty started breaking down very fast and only got about 10k miles on it before I noticed oil pressure fluctuations , but this max duty is much better for higher temps and hard working trucks.
I feel, and most of my friends feel the AMSOIL IS the finest oil on the market. I guess it is what you could call a reference oil, an oil that every other oil manufacturer strives to be like. I've used them all but I have come to trust only AMSOIL.
I use their products in all of my vehicles and machinery both diesel and gas, oh....and also my guns.
Bottom Line
Yes, I would recommend this to a friend.
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4 star rating
By 
DOUG, 
a 
Verified Buyer 
on 
November 29, 2020
Great oil! Switched my 2009 Peterbilt with the ISX Cummins from mobil delvac 15w-40 to this. Noticed right away that I had less vibration from the engine while sitting in the cab. The oil stays cleaner longer also. I also started running this in my 2008 Silverado 3500 with the Duramax.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
By 
JOSH, 
a 
Verified Buyer 
on 
November 26, 2020
The oil I requested for my 2014 Ram/ 6.7 was delivered on time and well packed with no damage . This is the second time I’ve purchased from AMSOIL and will continue in the future . Highly recommend them !
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
By 
BRIAN, 
a 
Verified Buyer 
on 
November 22, 2020
The product speaks for itself
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
By 
CHASE, 
a 
Verified Buyer 
on 
November 21, 2020
My 2014 Ram Eco Diesel hums with Amsoil. I have gained in gas mileage and my truck warms up quicker. Love this product - it’s worth the extra $ - invest in your vehicle.
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
Very High Quality Product
By 
lifer 03, 
a 
Verified Buyer 
from 
Stony Point NC  
on 
November 17, 2020
Great Oil I would not use any other brand in my Dodge Cummins!
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
By 
MIKE, 
a 
Verified Buyer 
on 
November 16, 2020
Great oil doesn’t break down
Bottom Line
Yes, I would recommend this to a friend.
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5 star rating
By 
EDGAR, 
a 
Verified Buyer 
on 
November 14, 2020
I’m just going to keep it simple,your not going to find nothing better then this......Amsoil #1
By 
Aaron, 
a 
Verified Buyer 
from 
West Virginia 
on 
November 11, 2020
I use this in my 97 Dodge 2500 12 valve cummins, and my 2006 F450 6.0 powerstroke. I never have to add oil to either one between oil changes. No issues using this oil.
My son has run it in his dodge diesel for several years does a great job. I run a amsoil in both of our vehicles for many years won’t run anything else.
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