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Heavy-Duty Synthetic Diesel Oil 5W-40

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

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
    Purchases with promos
    By  GREG,  a  Verified Buyer  on  October 21, 2023
    It's nice to have promos. I love the products, but when the promo item isn't sent, it's a little frustrating. I ordered ahead of my scheduled time just to receive the promo item, so when it didn't come.............still love the oil though.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Diesel oil
    By  BRENT,  a  Verified Buyer  from  South Dakota  on  October 02, 2023
    Great product! When I first got my powerstroke 4 yrs ago I had a tiny valve click. Used the 5-40 heavy duty diesel oil, tick gone!!! I won’t use anything else ! I used amsoil from my first oil change in my 6.4 powerstroke till now I highly suggest it!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    6.0 powerstroke
    By  JEFF,  a  Verified Buyer  from  Oregon  on  September 15, 2023
    After trying many synthetics on the market, I got the best performance out of amsoil for my 6.0 powerstroke
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Ram Eco-Diesel oil
    By  ANTHONY,  a  Verified Buyer  from  New Mexico  on  September 09, 2023
    2015 Ram 1500 Eco-diesel Running this oil because this engine needs the best to survive with the extremes these engines see with emission requirements!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    best
    By  SERGEY,  a  Verified Buyer  on  July 31, 2023
    best
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  • 5 star rating
    Diesel oil
    By  RON,  a  Verified Buyer  on  June 25, 2023
    Was delivered on time 3gals ordered going in to a Cummins 6.7 which holds 12qts then the oil was put in it was 1 quart low . 11quart
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil. Great program
    By  JASON,  a  Verified Buyer  from  Calgary Alberta   on  May 29, 2023
    Been using Amsoil for about 8 years now in various vehicles. What drew me in was the product quality and reputation. I work a lot in remote areas and don't always have access to power for my block heater. Extreme cold weather starts have been made easier since I switched to the 5w-40.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome
    By  AUGUST,  a  Verified Buyer  from  Isabella mn  on  April 28, 2023
    The best Diesel motor oil I have ever used it’s awesome
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Feels Good
    By  BRANDON,  a  Verified Buyer  on  April 13, 2023
    It just feels good knowing I'm putting in quality oil in my truck! Oil is the lifeblood of your Truck. Take care of it
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil !!
    By  CRAIG,  a  Verified Buyer  on  March 27, 2023
    Love this oil motor runs smooth. Amsoil is a great product.
    Bottom Line
    Yes, I would recommend this to a friend.
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