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Heavy-Duty Synthetic Diesel Oil 15W-40

Product code : ADPQT-EA

• Delivers 4X more wear protection1
Minimizes oil consumption
Excels in extreme temperatures
Helps keep trucks and equipment operating at peak performance
Offers outstanding value

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation

• Delivers 4X more wear protection1
Minimizes oil consumption
Excels in extreme temperatures
Helps keep trucks and equipment operating at peak performance
Offers outstanding value

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation

Heavy-Duty Synthetic Diesel Oil 15W-40



Developed to provide protection beyond conventional, synthetic-blend and other synthetic oils. AMSOIL synthetic technology delivers heavy-duty protection for diesel enthusiasts and those who depend on their trucks and equipment to make a living.

See the Product Data Bulletin for full details.


HEAVY-DUTY ENGINE PROTECTION

  • Delivers 4X more wear protection1
  • Helps maximize equipment life
  • Helps reduce maintenance costs and downtime

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation

Delivers More Wear Protection

Third-party testing shows Heavy-Duty Synthetic Diesel Oil delivers 4X more protection against wear than required by Detroit Diesel’s* standard.I

IBased on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 10W-30 as worst-case representation. *All trademarked names and images are the property of their respective owners and may be registered marks in some countries. No affiliation or endorsement claim, express or implied, is made by their use.


VISCOSITY CONTROL

  • Resists oxidation and the thickening effects of soot contamination
  • Retains viscosity after high-temperature service for added engine protection and increased fuel economy
  • Provides up to 66 percent less oil consumption2

2Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test

Reduces Oil Consumption

Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.L

Reduces Oil Consumption – Heavy-Duty Synthetic Diesel Oil provides up to 66% less oil consumption.

L Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test.


EXCELS IN EXTREME TEMPERATURES

  • Provides outstanding protection and performance in hot and cold temperature extremes
  • Delivers improved heat and oxidation resistance compared to conventional diesel oils
  • Flows dependably in cold temperatures for easier startup and improved engine protection

See the Product Data Bulletin for full details.

Heavy-Duty Synthetic Diesel Oil 15W-40

Data Bulletin

Warranty

SDS



Heavy-Duty Synthetic Diesel Oil 15W-40

  • 5 star rating
    Diesel oil
    By  HARRY,  a  Verified Buyer  on  January 13, 2023
    Just switched over to this for my diesel pusher motorhome. Can’t wait to see how it will run now.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    First time buyer
    By  PAUL,  a  Verified Buyer  from  Pace fl  on  January 12, 2023
    So far it is doing better than any oil I have used,time will tell .
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Been using this for years
    By  MIKE,  a  Verified Buyer  from  MA  on  December 29, 2022
    I use this in my 2005 Powerstroke and have been using it sine the truck was new.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The best oil on the market
    By  Myron,  a  Verified Buyer  from  Arizona  on  December 23, 2022
    Amsoil is the only oil that I use. In my opinion it is the best oil on the market.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Oil
    By  RANDALL,  a  Verified Buyer  from  Libby Montana   on  December 08, 2022
    Very good oil use in all vehicles
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Super oil
    By  JEFF,  a  Verified Buyer  from  North Carolina   on  December 07, 2022
    Put it in my 99 F250 with 249000 miles on it. I have run it approximately 1000 miles and the 7.3 powerstroke is quieter. Seems to start easier. Anxious to see how it holds up pulling our camper. So far love it!!! My only problem is I have made 2 orders and I have not received any free items that I was supposed to. But very satisfied with the oil!!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil
    By  STEVEN,  a  Verified Buyer  on  November 22, 2022
    Love your synthetic products.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Oil
    By  JOHN,  a  Verified Buyer  on  October 31, 2022
    The oil is great. However, my promo prize was sent to the wrong address.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Only oil I use in my diesel
    By  John,  a  Verified Buyer  from  Haverhill, Iowa   on  October 31, 2022
    After my distributor moved, I had to resort to using Rotella until I found a new one. I've used Amsoil for about 6 years. It is more expensive, but after sinking $11,000 into my truck for new injectors and other upgrades it's all I use. I trust it to keep my truck running like new. It has 220k miles and runs great. We pull a fifth wheel in the spring, summer and fall. I have NEVER had to add oil. My operating temperature is always steady and there is a difference in noise reduction with Amsoil. The extra money is worth peace of mind to just get in and go anywhere. I'm a customer for life.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    L5P Durmax Oil
    By  DENNIS,  a  Verified Buyer  from  Lenexa Kansas  on  October 27, 2022
    Engine seems to run quieter on Amsoil. Love the 10 quart jug.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?