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Signature Series Max-Duty Synthetic Diesel Oil 15W-40

Product code : DMEQT-EA

Outstanding extreme-pressure protection
Delivers 6X more wear protection1
Maintains proper viscosity (thickness)
Minimizes oil consumption
Maximizes fuel efficiency
Excels in extreme temperatures

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation

Outstanding extreme-pressure protection
Delivers 6X more wear protection1
Maintains proper viscosity (thickness)
Minimizes oil consumption
Maximizes fuel efficiency
Excels in extreme temperatures

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation

Signature Series Max-Duty Synthetic Diesel Oil 15W-40



Developed to protect the horsepower diesel enthusiasts crave and extend the life of hard-working commercial equipment in the most severe conditions. Signature Series synthetic technology delivers max-duty protection in on- and off-road applications.

See the Product Data Bulletin for full details.

MAXIMUM ENGINE PROTECTION

  • Delivers 6X more wear protection,1 delivering extra protection so you can push your diesel with peace of mind
  • Provides long-lasting wear protection, keeping cylinder liners looking like new2
  • Delivers up to 60 percent better turbo cleanliness3
  • Withstands the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower
  • Provides up to 2X better rust protection4

1Based on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-30 as worst-case representation
2Based on independent testing of AMSOIL 5W-30 Signature Series Max-Duty Synthetic Diesel Oil and a leading conventional 15W-40 diesel oil using the Detroit Diesel* DD13 Scuffing test for specification DFS 93K222.
3Based on specification standards of CAT C13 2nd Ring Top Land Carbon testing
4Based on industry standard testing using the NMMA FC-W Rust Test.


Delivers More Wear Protection

Third-party testing shows Signature Series Max-Duty Synthetic Diesel Oil delivers 6X more protection against wear than required by Detroit Diesel’s* standard.II

IIBased on third-party testing in the Detroit Diesel DD13 Scuffing Test for specification DFS 93K222 using 5W-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.


AMSOIL Fights Wear

AMSOIL delivers powerful engine protection. How good is it? In third-party testing compared to a leading brand, AMSOIL provided long-lasting wear protection, keeping cylinder liners looking like new.DD

AMSOIL Fights Wear – AMSOIL delivers powerful engine protection. How good is it? In third-party testing compared to a leading brand, AMSOIL provided long-lasting wear protection, keeping cylinder liners looking like new.

DDBased on third-party testing of AMSOIL 5W-30 Signature Series Max-Duty Synthetic Diesel Oil and a leading conventional 15W-40 diesel oil using the Detroit Diesel* DD13 Scuffing test for specification DFS 93K222.
*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.


Keeps Turbos Clean

AMSOIL Signature Series Max-Duty Synthetic Diesel Oil provides protection boosted to the max, delivering up to 60% better turbo cleanlinessJ and withstanding the extra demands you place on the turbo when pulling heavy loads or updating the tune for maximum horsepower.

JBased on specification standards of CAT C13 2nd Ring Top Land Carbon testing


Protects Against Rust

Provides up to 2X better rust protection.K Protects Against Rust – Provides up to 2X better rust protection.

KBased on industry standard testing using the NMMA FC-W Rust Test.


VISCOSITY CONTROL

  • Resists oxidation and the thickening effects of soot contamination
  • Retains viscosity after high-temperature service for maximum engine protection and efficiency
  • Provides up to 76 percent less oil consumption5

5Than required by the API CK-4 standard in the Caterpillar-1N oil consumption test


Reduces Oil Consumption

Signature Series Max-Duty Synthetic Diesel Oil provides up to 76% less oil consumption.L

Reduces Oil Consumption – Signature Series Max-Duty Synthetic Diesel Oil provides up to 76% less oil consumption.

LThan 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
  • Resists thermal (heat) breakdown better than conventional and competing synthetic diesel oils.
  • Stays fluid in sub-zero temperatures for easier starting, improved oil flow and reduced wear.

See the Product Data Bulletin for full details.

Signature Series Max-Duty Synthetic Diesel Oil 15W-40



Signature Series Max-Duty Synthetic Diesel Oil 15W-40

  • 5
    Best of the best
    By  JOHN,  a  Verified Buyer  from  Long Island NY  on  July 29, 2021

    Describe the issue

    You cannot get better oil.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 4
    Diesel tractor
    By  Richard,  a  Verified Buyer  from  PA  on  July 29, 2021

    Describe the issue

    This is only oil I have used in my cub cadet tractor since purchased in 2000.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Great product
    By  LOREN,  a  Verified Buyer  from  Ohio  on  July 27, 2021

    Describe the issue

    Absolutely a great product highly recommended product
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Duramax
    By  REG,  a  Verified Buyer  from  BC  on  July 25, 2021

    Describe the issue

    Extended change intervals and lessens oil consumption
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    The absolute best!
    By  KEVIN,  a  Verified Buyer  from  Newhall, Ca  on  July 24, 2021

    Describe the issue

    2nd to none!
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Great oil
    By  ANDREW,  a  Verified Buyer  on  July 24, 2021

    Describe the issue

    I have a 06 duramax and my truck runs great on Amsoil.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Great product
    By  JIM,  a  Verified Buyer  from  Jacksonville, Fl  on  July 23, 2021

    Describe the issue

    Great product, no issues.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    The ONLY oil I use!
    By  JUSTIN,  a  Verified Buyer  from  Forney TX  on  July 22, 2021

    Describe the issue

    I have a 2008 LMM and used to use T6 (if you are looking at this oil, you should know what that is) cause my grandfather used it in his diesels. Found this, started using it. Everything noticeably smoother. Quick delivery and got a good discount program. Oh, and I get stickers too. Haha
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Reliable and quick delivery
    By  ROBERT,  a  Verified Buyer  from  80134  on  July 12, 2021

    Describe the issue

    Been using Amsoil for many years knowing the performance of their many products, I will continue to be a loyal customer.
    Bottom Line
    Yes, I would recommend this to a friend.
  • 5
    Duramax
    By  DENNIS,  a  Verified Buyer  from  Indiana   on  July 11, 2021

    Describe the issue

    Love this for my duramax.
    Bottom Line
    Yes, I would recommend this to a friend.