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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
    Awesomeness
    By  RICK,  a  Verified Buyer  from  Belle River  on  June 20, 2024
    I’m an 100% AMSOIL user I would not use anything but from my lawnmower to all vehicles and farm equipment
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    AMSOIL Signature Series 100% Synthetic Max-Duty Diesel oil
    By  JR,  a  Verified Buyer  on  June 20, 2024
    We have swapped to AMSOIL AMSOIL Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil which appears to be the best product on the market. The purchasing process and speed of delivery make AMSOIL a must buy product we will trust AMSOIL products in all of our equipment and vehicles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel oil
    By  ROBERT,  a  Verified Buyer  on  June 13, 2024
    Good oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Doing good
    By  DAVID,  a  Verified Buyer  from  Virginia   on  June 12, 2024
    Only have approximately 4K miles on the oil. Appears to still be consistent. Added a bypass system at same time. Waiting to reach 15K miles and send in sample for testing. Will follow up
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oily stuff
    By  WILLIAM,  a  Verified Buyer  from  Southeast Indiana  on  June 11, 2024
    Bought this for my tractor after reading reviews and comparisons. My equipment is expensive, so I want the best in it. I'm told this is it. So far , so good.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good stuff
    By  JOHN,  a  Verified Buyer  from  SoCal  on  June 11, 2024
    I use the 15-40 signature series in my RV with a 12.8 liter Mercedes Diesel. I noticed a difference on my way home from having the first oil change with the Amsoil. On our first trip my wife ask what I had changed. She said "the engine is quieter and smoother". Now it's the only oil I'll use. Thank you for a great product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    First switch to the 25k mile oil.
    By  ERNIE,  a  Verified Buyer  from  Richmond va  on  June 09, 2024
    Oil should work great but was disappointed they did not have my oil filter in stock. I really want to shop for everything at one spot.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Simply the best oil
    By  MICHAEL,  a  Verified Buyer  from  Quebec Canada  on  June 08, 2024
    I reduce the consomption of oil of my truck in half !
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    2017 powerstroke
    By  SCOTT,  a  Verified Buyer  on  June 07, 2024
    Since using this oil the engine sounds and runs smoother and stays cleaner longer and I get better fuel economy. I trust no other brand. I use amsoil in anything that takes oil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Ford 6.0
    By  BEAU,  a  Verified Buyer  on  June 06, 2024
    Used it in two different trucks. And so far impressed with how smooth it sounds running. It seems to be quieter. I have 3k miles on one truck and 500 miles on another. Both trucks are ford 6.0’s. And so far I'm impressed.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?