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AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil

Product code : DHDQT-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 5W-30 100% 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 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.

AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil

Data Bulletin

Warranty

SDS



AMSOIL Signature Series 5W-30 100% Synthetic Max-Duty Diesel Oil

  • 5 star rating
    Amsoil products
    By  BRUCE,  a  Verified Buyer  from  Michigan   on  February 07, 2024
    This oil I have been using for 20 years great stuff . My last truck had over a half a million miles on it was still going strong!!!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Confidence inspiriing
    By  KIRK,  a  Verified Buyer  from  Harpswell, ME   on  January 07, 2024
    After being in transition for nearly a year and a half, I am finally settling down into my new home. Consequently, I have not changed my John Deere 2320 tractor oil in over a year. I've only put 40 or so hours on it but I try not to miss my annual oil change interval. Amsoil's MAX duty 5W30 motor oil has given me the confidence not to worry to much about that missed oil change. Will get to it in the next week or two. Fantastic protection/ confidence, and zero oil consumption on a Yanmar diesel with nearly 1000 hours on it.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  DOUGLAS,  a  Verified Buyer  from  Fort Lauderdale fl   on  August 07, 2023
    Only oil I use in my 2017 fuso fg4x4
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Most Trusted
    By  KENTON,  a  Verified Buyer  from  Alabama   on  June 20, 2023
    I have been using nothing but Amsoil in my 2020 Chevy Colorado with the Duramax diesel. I did extensive research on the best Seidel oil and hands down Amsoil was the industry’s best. I have not been disappointed.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 3 star rating
    Confusing information
    By  GEORGE,  a  Verified Buyer  from  Upstate NY  on  January 21, 2023
    I wrote Amsoil two times and two times, i received different information two times. I asked if there was any oil I could use in both my dodge ram diesel and my 2017 honda turbo hatchback. So I don't have to stock two kinds of oils. Both people wrote back different things . At first, they said this would work, then I questioned that and AMSOIL wrote back and the answer dept said this was no good for the Honda. So now IDK. I read all oil reports and Amsoil always beats everyone, but it beats me THEY do not know what i should be using. signed confused.
    Bottom Line
    No, I would not recommend this to a friend.
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  • 5 star rating
    Noticably smoother
    By  PAUL,  a  Verified Buyer  from  Central Florida  on  November 13, 2022
    Land Rover dealer will only put Castrol in, so I decided to do my own with Amsoil. Engine runs noticably smoother. My only wish is that this product was available in liter size quantity.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Works well in my kubota tractor
    By  RODNEY,  a  Verified Buyer  from  South Deerfield, Ma.  on  October 27, 2022
    I have use this oil for years in my tractor that stays out in the cold. Have never had a problem starting it.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    I believe in this stuff!
    By  PERRY,  a  Verified Buyer  from  Gatlinburg  on  August 07, 2022
    I have used AMSOIL top grade diesel oil and the dual filter system in two GMC pickup trucks and have had no oil related problems with once per year oil changes. I have towed a 10,000 Airstream travel trailer over 200,000 miles during that time. I did regular oil analysis during the first 5 or so years, and never gol a recommendation to change the oil after 12 months of travel. I have condensed several people to make the change to a setup like mine for their tow vehicle with no complaints from any of them.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    You want to get 5mpg ? Get this oil than
    By  JOSE,  a  Verified Buyer  from  Maryland   on  August 05, 2022
    I have a rotella 15-w40 oil in my car because people around here where saying the is the best for diesels and after using asmoil I found out the motor got quiet , smooth and idles better also gets better Milage So after finding this Amsoil oil i will never go back to use a different brand Give it a try and see for your self
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    John Deere tractor
    By  STEVE,  a  Verified Buyer  from  Battle Creek, Michigan   on  July 31, 2022
    I put this in my tractor and is great! The tractor is exposed to heavy loads, dirt and dust and high RPMs. Oil is great under pressure and delivers.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?