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Your order may take longer than normal to arrive. We are experiencing extremely high demand and freight carriers are experiencing delays nationwide. LTL shipments are most severely affected.

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

  • 5
    Delayed oil filter
    By  TROY,  a  Verified Buyer  from  Chehalis WA  on  November 29, 2021

    Describe the issue

    Got the oil in a good time but didn't get the filter at the same time was kinda disappointed because I had scheduled to get the oil change done. So I had to go buy a filter from napa.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great product
    By  MATTHEW,  a  Verified Buyer  on  November 25, 2021

    Describe the issue

    Only oil I’ll run in my 6.0 powerstroke
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great oil!
    By  Billy,  a  Verified Buyer  from  AR  on  November 14, 2021

    Describe the issue

    I've been using this oil in my 04 6.0 diesel for a couple years now and I'm very pleased with how it runs and feel it's the best oil for longevity.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great oil
    By  TERRY,  a  Verified Buyer  from  California  on  November 12, 2021

    Describe the issue

    I have an older Dodge Cummins diesel and this oil checked all the Marks at a great price.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Quality oil and filter
    By  MIKE,  a  Verified Buyer  from  Minnesota   on  November 06, 2021

    Describe the issue

    Top quality oil and filter, super fast shipping. For sure a repeat customer!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    ?
    By  ROBERT,  a  Verified Buyer  on  November 05, 2021

    Describe the issue

    I like your services and I like your products I’m very happy with them
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Heavy-Duty Synthetic Diesel Oil 15W-40
    By  RANDY,  a  Verified Buyer  from  Nevada  on  November 02, 2021

    Describe the issue

    Best oil ever for my 2018 Sierra Duramax!!!.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    good stuff!!
    By  FOSTER,  a  Verified Buyer  from  South Carolina  on  October 19, 2021

    Describe the issue

    See previous review!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Amsoil for 02 durmax
    By  KEVIN,  a  Verified Buyer  from  Alabama  on  October 19, 2021

    Describe the issue

    I used Amsoil years ago in my 02 durmax and saw instant fuel millage increase and then I switched to shell rotella t6 synthetic, thinking I would get the same performance. I could never get over 17mpg with rotella t6 so I switched back to Amsoil and again I saw an instant increase of 2mpg and now I get 19 unloaded. I also saw a significant increase pulling my 8,000 lbs camper. I recently pulled through Cherokee Nc and through the Smokey Mt. Pkwy into Gatlinburg Tn. I averaged 13.5 mpg ! I will never use anything else in my durmax again.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    A Great Product
    By  WILLIAM,  a  Verified Buyer  from  Raleigh, NC  on  October 16, 2021

    Describe the issue

    The truck has been driven about 800 miles since the oil change. The oil is still at the full mark on the dipstick. The history of the last oil change (and the first of my ownership with this truck) is that the engine used a quart of oil in about 2,000 miles. In my opinion, still a little soon to really rate the oil's performance.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?