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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



Heavy-Duty Synthetic Diesel Oil 15W-40

  • 4
    2021 GMC L5P
    By  JAKE,  a  Verified Buyer  on  January 21, 2022

    Describe the issue

    Can’t complain as of yet. Got 15000 miles on truck do oil change every 5k so far so good
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Good stuff
    By  BENJAMIN,  a  Verified Buyer  on  January 16, 2022

    Describe the issue

    Good oil, runs well in my 6.0 psd
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Diesel motor oil
    By  PAUL,  a  Verified Buyer  from  70131  on  January 15, 2022

    Describe the issue

    I use the Amsoil oil in my John deer tractor I use Amsoil in all my motors.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Amsoil DME for GM 6.6L Diesel Engines
    By  WILLIAM,  a  Verified Buyer  from  Camden, NC  on  January 08, 2022

    Describe the issue

    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.
    Was this review helpful?
  • 5
    Excellent oil
    By  AL,  a  Verified Buyer  on  January 07, 2022

    Describe the issue

    I have used this oil in my 2002 diesel truck for many years and won't change.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Amazing!!
    By  DANIEL,  a  Verified Buyer  from  Arizona   on  January 07, 2022

    Describe the issue

    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
    good oil for my l5p
    By  ERIK,  a  Verified Buyer  on  January 07, 2022

    Describe the issue

    great oil and fast shipping got to my door steps in 2 days keep up the great work Amsoil
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great Product!
    By  MICHAEL,  a  Verified Buyer  from  Houston, Texas  on  January 04, 2022

    Describe the issue

    178,000 miles and still going strong in my 2012 F350 4x4. Amsoil is all I use on my Truck.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great oil for diesels
    By  MICHAEL,  a  Verified Buyer  from  MASSACHUSETTS  on  December 15, 2021

    Describe the issue

    Use this in my powerstroke for the past 17 years
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    15W-40 / 4x & 6x oils - AWESOME!
    By  Kyle J.,  a  Verified Buyer  from  North Dakota  on  December 15, 2021

    Describe the issue

    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?