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Customer Ratings & Reviews

AMSOIL Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil

Product code : DTTQT-EA

4.9 star rating Read 1,551 reviews

Customer Rating

4.9

92% would recommend

  • 5 1486
  • 4 45
  • 3 9
  • 2 3
  • 1 8

AMSOIL Signature Series 10W-30 100% Synthetic Max-Duty Diesel Oil

4.9 star rating Based on 1,551 reviews
  • 5 star rating
    The Best oil
    By  DAVID,  a  Verified Buyer  from  Berryville   on  June 26, 2021
    We have used other oils in our diesel gator 6x4 but none matches the quality of Amsoil. When we switched to Amsoil diesel 5w40 the gator runs a lot my smoothly.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Graeat Product
    By  IMAD,  a  Verified Buyer  from  Kent WA  on  June 23, 2021
    Excellent product, I love Amsoil, use it on my Diesel Truck, great engine protection
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil 👍
    By  LANCE,  a  Verified Buyer  on  June 21, 2021
    Nothing but amsoil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  JORGE,  a  Verified Buyer  on  June 20, 2021
    Always on time shipping is great awesome products!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The engine works and running really smooth
    By  LUIS,  a  Verified Buyer  from  Homestead   on  June 19, 2021
    I really love how my Duramax engine work with the amsoil signature full synthetic diesel oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    This is the only product I will run in my truck
    By  SEAN,  a  Verified Buyer  from  In exercise owner  on  June 17, 2021
    Gray products have no problems
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good product great packaging.
    By  BRUCE,  a  Verified Buyer  on  June 16, 2021
    All AMS are quality products.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Massey running smoothly!
    By  East tenn,  a  Verified Buyer  from  Tennessee  on  June 12, 2021
    Massey sub compact running great! Expect a long life!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Syn Oil
    By  RONALD,  a  Verified Buyer  from  Oregon  on  June 12, 2021
    Been using for years and this is the best
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Really good, I’m happy how the engine is working now
    By  LUIS,  a  Verified Buyer  from  Homestead FL  on  June 11, 2021
    I’m happy to use amsoil synthetic oil for my pickup truck,the engine sounds a lat better than before
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome Stuff
    By  JASON,  a  Verified Buyer  from  Texas  on  June 10, 2021
    Product is the bomb!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil!
    By  RANDAL,  a  Verified Buyer  on  June 09, 2021
    This oil is impressive!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Good stuff!
    By  NEHEMIAH,  a  Verified Buyer  from  Indiana   on  June 08, 2021
    Great product and even better customer service and shipping. All my vehicles get Amsoil
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Signature series
    By  COLIN,  a  Verified Buyer  on  June 07, 2021
    Used this product for the last 5 oil changes and many more to come.
    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  Farmington, CA  on  June 06, 2021
    I love Amsoil products. It gives me great comfort and piece of mind knowing all of my engines from my Can Am side by side, my lawn mowers, motorcycle and all my trucks are protected with the best oils on the market today.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Duramax
    By  Anthony,  a  Verified Buyer  from  MN  on  June 04, 2021
    Great oil for any truck
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    An outstanding CK4 oil
    By  ofelas,  a  Verified Buyer  on  June 04, 2021
    Amsoil's excellent SS oils are the only CK4 lubes I'll use on a CI4+ application, especially if I don't have immediate access to AME/HDD.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great products.
    By  SCOTT,  a  Verified Buyer  on  May 29, 2021
    I have been using 15w40 marine/heavy duty for 25 years. Will be using this new signature series in my 2015 Duramax next oil change (waited 25000miles).
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Longer oil change intervals
    By  BRIAN,  a  Verified Buyer  on  May 29, 2021
    This oil has allowed me to go twice as long between oil changes.(from 7500) to 12-14K. Not having to add any along the way.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    A++++++
    By  JASON,  a  Verified Buyer  from  Lompoc   on  May 29, 2021
    Excellent product highly recommended
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?

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