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Heavy-Duty Synthetic Diesel Oil 5W-40

Product code : ADOQT-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 5W-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 5W-40

Data Bulletin

Warranty

SDS



Heavy-Duty Synthetic Diesel Oil 5W-40

  • 5 star rating
    Great product
    By  Eric,  a  Verified Buyer  from  MT  on  January 03, 2023
    Great product. Takes the smoke out of the back end and makes cold starts effortless.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great oil
    By  JIM,  a  Verified Buyer  from  Arizona  on  December 31, 2022
    I used this oil for my first oil change (2022 F-350 Diesel). The engine starts and runs quieter than with the factory fill.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil
    By  MATT,  a  Verified Buyer  on  December 31, 2022
    Love this stuff
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    The good stuff
    By  DAN,  a  Verified Buyer  from  Massachusetts   on  December 25, 2022
    Used to run rotella t6 but switched to this stuff ever since I discovered the preferred customer program and will never go back! Run it in my powerstroke and my tractor now as well
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Oil Quality
    By  JIM,  a  Verified Buyer  from  Florida  on  December 25, 2022
    Many oils are not described about the abilities to protect the engine. Amsoil does. As well with filters like the two sets of Amsoil double filters I have installed on two trucks their filters are far superior in cleaning oil. Most products sold today are poor quality with advertising. Amsoil has stuck to consumer education and better products. All our equipment uses Amsoil oil and filters in order to avoid other oil company scams. We removed the 2015 6.7 diesel engine oil pan on a Ford F350 and with using Amsoil the pan inside was 100% clean, zero deposits. A larger oil pan was installed, no engine problems.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best oil
    By  DOUGLAS,  a  Verified Buyer  on  December 05, 2022
    Don't waste your money on cheap oil, in the end you will save money.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Diesel oil
    By  PAUL,  a  Verified Buyer  from  Moses Lake   on  November 28, 2022
    It's a great product and a good value.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Diesel Oil
    By  TED,  a  Verified Buyer  from  Montana  on  October 25, 2022
    Oil performs excellent. Starts good in cold weather and motor runs smooth. Highly recommended.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great Low Temp Oil
    By  DAVE,  a  Verified Buyer  from  Big Valley AB Canada  on  October 15, 2022
    This oil is amazing at our subzero temps in the winter and lubes great through the summer.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Excellent
    By  BRYON,  a  Verified Buyer  from  Tooele, Utah  on  September 15, 2022
    Excellent oil for my truck.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?