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AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil

Product code : ADOQTC-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

AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil



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.

AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil

Data Bulletin

Warranty

SDS



AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil

  • 2 star rating
    used
    By  ANTHONY,  a  Verified Buyer  from  ontario Canada  on  June 30, 2024
    unable to give review as my previous oil was signature series My 2015 eco diesel crank bearings failed before i could try this oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel Oil
    By  DUSTIN,  a  Verified Buyer  on  May 08, 2024
    The best oil for your diesel motor. It's the only I will use from now on
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel Oil
    By  CLIFFORD,  a  Verified Buyer  on  May 03, 2024
    Great product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel oil and filter
    By  DOUGLAS,  a  Verified Buyer  on  May 01, 2024
    The oil and filters are great. However, lately every time I try to get my filter they never have stock and I end up with a Fram from the local auto parts store. I also religiously fill out the special request to deliver to the back door because of our porch pirate problem and the last three or four times whoever is doing the delivery must have trouble reading English as the order winds up front and center of the front door.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil synthetic
    By  JEFF,  a  Verified Buyer  from  Oregon  on  March 13, 2024
    Great protection from amsoil. No consumption and quieter running engine
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent oil and filters
    By  MATT,  a  Verified Buyer  from  Collierville TN  on  March 03, 2024
    I absolutely love this oil. After listening to some podcasts, I chose this oil to run for 25,000 miles. My truck now has 130,000 miles on it and Burns less than 1 quart of oil in the 25,000 mile runtime.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Quality oil and service!
    By  DirtyboyDiesel ,  a  Verified Buyer  from  Woodhull ny  on  February 23, 2024
    Oil is good quality and they ship it to your door fast and free. It’s affordable and great for your engine’s longevity.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good in cold weather
    By  AARON,  a  Verified Buyer  from  Nothing west Ont Canada   on  February 23, 2024
    Run it in my 1998 chevy k2500 6.5 diesel starts easily in the winter months
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Hands down best diesel oil available!
    By  TIM,  a  Verified Buyer  from  Slidell, La  on  February 09, 2024
    Have driven this truck very hard towing a 5th wheel all over country 8k oil changes with Amsoil has kept my Titan xd 5.0 Cummins running strong for 150k +
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    So amazing highly recommend for a Cummins diesel
    By  Quaid,  a  Verified Buyer  from  MT  on  January 20, 2024
    Amazing product very very good oil pressure and runs smooth for my Cummins 24 valve 5.9
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?