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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
    AMSOIL Signature Series 0W-40 100% Synthetic Max-Duty Diesel
    By  Eugene,  a  Verified Buyer  from  Brooklyn, NY  on  April 11, 2024
    Winter time mixing with other AMS oils. Working very good.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Quality oil.
    By  MARK,  a  Verified Buyer  from  Massachusetts  on  April 11, 2024
    I like the data backed science behind the amsoil products. I have had my amsoil analyzed by independent third party companies after various mileage intervals (5k, 10k and 20k+) and the oil still had good lubrication characteristics (tbn) at even 20k+ miles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best in its class
    By  TRACY,  a  Verified Buyer  from  Clarksville   on  April 09, 2024
    Can’t beat this stuff I run it in my F350
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil change
    By  NICK,  a  Verified Buyer  from  Key largo   on  April 09, 2024
    Smooth and easy Send my promotional product. That I asked for 3 times... Let's see if I get a response.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Quality
    By  SOLOMON,  a  Verified Buyer  on  April 08, 2024
    Good oil buy it
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Better cold weather cranking
    By  DAVE,  a  Verified Buyer  from  Idaho  on  March 31, 2024
    Much better starting in the morning on cold winter days. I don’t drive it very often now so I change the oil only once a year with this oil. That’s less than 5000 miles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    5w40 signature series
    By  CHRISTOPHER,  a  Verified Buyer  from  STL, Missouri  on  March 29, 2024
    Been running in my 05’ 6.0 powerstroke and have great results
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  CHRIS,  a  Verified Buyer  from  GA  on  March 24, 2024
    No issues for 20 years. I have used this product and will Continue to
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great motor oil for diesel pickups
    By  WADE,  a  Verified Buyer  from  Texas  on  March 22, 2024
    I have been using Amsoil now for 2yrs straight. I started using this motor oil with my F350 dually, and also use the Amsoil 20micron filter. So far so good. I have seen the oil retain its viscosity better during my regular oil change frequency as compared to the Rotella T I was using (NOTE: Rotella T is great oil also). As a result, I have become an Amsoil convert. Am still sticking to the traditional Ford oil change frequency that is estimated by the truck's onboard computer (approx 7000mi), for the simple reason that oil is relatively cheap when compared to the price of a failed engine. :-) Last, from the information I have read I do think that Amsoil will extend the life of my engine (currently at approximately 160,000mi).
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    So far so good
    By  JOSHUA,  a  Verified Buyer  from  Oregon  on  March 16, 2024
    Lightning fast shipping! Great motor oil. Says you can use it for extended mileage, altho when I change my oil I can feel and hear the Motor running quieter and it feels smoother. Maybe thats a filter thing but I don't push it that far past OM recommendations. I bout my 2018 Ram with the Cummins in 2019 with 420 miles on it and this is the only oil I have used! Got 170k on it now. It's completely stock. I use the Stratapore filter by fleetguard.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?