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Customer Ratings & Reviews

Signature Series Max-Duty Synthetic Diesel Oil 10W-30

Product code : DTT1G-EA

5 star rating Read 68 reviews

Customer Rating

5

97% would recommend

  • 5 67
  • 4 1
  • 3 0
  • 2 0
  • 1 0

Signature Series Max-Duty Synthetic Diesel Oil 10W-30

5 star rating Based on 68 reviews
  • 5 star rating
    Great for cold weather start up
    By  WAYNE,  a  Verified Buyer  from  Pennsylvania  on  May 11, 2023
    Provides faster cranking in cold weather and therefore easier extreme cold weather starts.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil
    By  TIMOTHY,  a  Verified Buyer  on  April 25, 2023
    Best oil ever used
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Heavy Duty Oil
    By  MICHAEL,  a  Verified Buyer  from  Lancaster, SC  on  April 23, 2023
    I have been using this oil now for about a year. It seems to be doing better as far as oil pressure goes compared to my previous oil. I have become a loyal Amsoil fan and user now!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil speaks for itself
    By  JOE,  a  Verified Buyer  from  Ohio  on  April 02, 2023
    Engine runs great after switching from Schaeffers and I received the product next day without pay for extra shipping.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The perfect oil!
    By  CMatt,  a  Verified Buyer  from  Houston, TX  on  March 27, 2023
    Great oil, runs much cooler than the Ford synthetic I had to use in warranty. Even after 10K miles in Texas heat towing, oil keeps cool and the turbo is happy. Even after 10K miles the oil comes out slick. I use it in every engine and gear box in my truck, car and both motorcycles. Couldn't be more happy with an oil and additives.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome oil
    By  ARTHUR,  a  Verified Buyer  from  GA  on  January 16, 2023
    Awesome product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    AS expected
    By  GEORGE,  a  Verified Buyer  from  Ohio  on  January 06, 2023
    18,000+ miles on first change using this product. Oil analysis was not perfect, but said to keep running. Since low miles on engine, decided to change.
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  • 5 star rating
    Best in business
    By  JULIO,  a  Verified Buyer  from  Virginia   on  November 07, 2022
    I will only use this moving forward
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome Product
    By  ARTHUR,  a  Verified Buyer  on  November 07, 2022
    Amsoil awesome product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Motor oil
    By  ERIC,  a  Verified Buyer  from  Jacksonville NC  on  October 24, 2022
    Nothing on the market better. I will continue to run ams in everything I got!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Perfect motor oil for diesels.
    By  Cdub,  a  Verified Buyer  from  Nampa Idaho  on  October 21, 2022
    I have an ‘08 F-250 powerstroke. Truck loves Amsoil synthetics. I run Amsoil exclusively these days. My vehicles all run better on Amsoil. No joke. The preferred customer program and drop shipping to my front door makes running Amsoil very affordable. Great piece of mind knowing that my expensive truck has the best lubrication that money can buy.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil
    By  TIM,  a  Verified Buyer  on  October 18, 2022
    Great oil for my Ram 3500. My truck does nothing but pull heavy trailers so I use this oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Oil
    By  MICHAEL,  a  Verified Buyer  from  Lancaster,SC  on  October 02, 2022
    I switched to Amsoil after Shell was not able to get the additive for their T5 Semi Synthetic oil. I'm glad I switched! I really Like this oil. I seem to be getting higher oil pressure and longer life with this oil. I have only been using it for about 6 months but I do like it a lot!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent product
    By  Tom,  a  Verified Buyer  from  Ohio  on  August 27, 2022
    My order is at my door usually in a couple days. The quality is excellent.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    It's Amsoil, need I say more? Great product!!
    By  ROBERT,  a  Verified Buyer  from  CO  on  August 21, 2022
    As in the title, great product
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Diesel engine oil
    By  STEVE,  a  Verified Buyer  from  Pennsylvania  on  August 18, 2022
    Amazing oil. My engine is quieter than before. Better fuel mileage. Engine temp is 5 degree's lower. Amsoil once again knocks it out of the park. Great oil!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great Product
    By  MICHAEL,  a  Verified Buyer  from  Winnemucca, NV  on  August 08, 2022
    Love Amsoil products. You cannot beat the quality of these products!!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Greatest oil
    By  RICARDO,  a  Verified Buyer  from  Hesperia   on  July 24, 2022
    Best oil for Diesel engine
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    10w30 Diesel Oil
    By  MICHAEL,  a  Verified Buyer  from  Lancaster,SC  on  July 22, 2022
    This is the second oil change that I have used this oil. I really like this oil! It seems to preform better than to other brand of Oil that I was using. It seems to hold better Oil Pressure than my previous Oil. I have become a Amsoil Customer for Life!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome product
    By  JESSE,  a  Verified Buyer  on  July 18, 2022
    Never an issue. Great product.
    Bottom Line
    Yes, I would recommend this to a friend.
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