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AMSOIL Signature Series 0W-40 100% Synthetic Max-Duty Diesel Oil

Product code : DZFQT-EA

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

     

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

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AMSOIL Signature Series 0W-40 100% Synthetic Max-Duty Diesel Oil



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 4X better cold-temperature performance1
  • 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

1When compared to SAE 15W-40 oil in the ASTM D5293 Cold Cranking Viscosity test
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.


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.

K Based 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.

EXCELS IN EXTREME COLD

AMSOIL 0W-40 Signature Series Max-Duty Synthetic Diesel Oil delivers 4X better cold-temperature performance when compared to SAE 15W-40 oil in the ASTM D5293 Cold Cranking Viscosity test.

See the Product Data Bulletin for full details.

AMSOIL Signature Series 0W-40 100% Synthetic Max-Duty Diesel Oil

Data Bulletin

Warranty

SDS



AMSOIL Signature Series 0W-40 100% Synthetic Max-Duty Diesel Oil

  • 5 star rating
    Best Full Synthetic Oil
    By  ANTHONY,  a  Verified Buyer  from  Georgia   on  May 27, 2024
    I have been using this oil for about five or six years. I think it’s the best oil out there. I also use the 20w50 V-Twin for my Harley. It’s like Frank’s Red Hot sauce. I put this Sh*t in everything.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Give it a try
    By  JERRY,  a  Verified Buyer  on  May 26, 2024
    I have not had a chance to use it yet but have high expectations by reading test results and comparisons.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil only please
    By  JAMES,  a  Verified Buyer  from  Akron  on  May 25, 2024
    Great oil and filter expensive but worth the mulha
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The best oil money can buy.
    By  ROBERT,  a  Verified Buyer  from  BC, Canada  on  May 25, 2024
    I've owned my 2015 Silverado 3500HD since new and have used Synthetic oil from new, I change my oil every 5000km or 12 months.( I don't put many km's on the truck , only used to pull a 36' travel trailer ) I used to use Rotella T6 5w40 until it got hard to find after Covid and the price shot up. I switched to Amsoil Signature 15w40 and use the Amsoil 20 micron oil filter. My oil used to go black in less than 1000km, but now that I've switched to Amsoil my oil stays much cleaner and is getting better with each oil change. If I add up the cost to use Amsoil per year and multiply that by say 10 years it will only cost me roughly 2000.00. The cost to replace a worn out Duramax is 20,000.00 plus, I would say that it makes good sense.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    it protects the bearing.
    By  COREY,  a  Verified Buyer  on  May 23, 2024
    it protects the bearings very well.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil
    By  MICHAEL,  a  Verified Buyer  on  May 21, 2024
    Great oil fast service.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Tick
    By  Gimblenut ,  a  Verified Buyer  from  Florida   on  May 20, 2024
    I had this tick after changing oil. Someone said to try amsoil it should go away. Well it did so what ever you think is the best because Joe said it’s the best because his friend of a friend said so well good luck.
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  • 4 star rating
    1992 5.9 Cummins
    By  ROBERT,  a  Verified Buyer  from  Tucson  on  May 20, 2024
    Oil seems to work great! The oily Oil I use in my Cummins
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Best diesel oil out there
    By  Ryan,  a  Verified Buyer  from  Georgia  on  May 19, 2024
    Getting 35k on this stuff in 6.7 cummins with amsoil bypass system on analysis...500hrs on commercial equipment with flawless performance excellent analysis and could push it alot further than I do..
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel oil in gas eng
    By  JERRY,  a  Verified Buyer  from  Omaha Arkansas   on  May 18, 2024
    Great product so far, running it in my 2021 Nissan Titan
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?