☰
Shop by Vehicle
Find AMSOIL Near You

Customer Ratings & Reviews

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

Product code : DTT1G-EA

5 star rating Read 73 reviews

Customer Rating

5

97% would recommend

  • 5 72
  • 4 1
  • 3 0
  • 2 0
  • 1 0

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

5 star rating Based on 73 reviews
  • 5 star rating
    My oil
    By  ROBERT,  a  Verified Buyer  from  Texas  on  August 29, 2021
    I have been using Amsoil since 2005 Over 500,000 miles on 3 trucks and no problems
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  ROBERT,  a  Verified Buyer  from  Temecula, CA   on  August 11, 2021
    I will only use Amsoil in my 97 5.9 Cummins Diesel.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Signature Series Max-Duty Synthetic Diesel Oil 10W-30
    By  JAMES,  a  Verified Buyer  from  Angleton, TX  on  August 09, 2021
    This is a great product and I will be buying it again. I have been using Amsoil products for more that 10 years and will continue to do so.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    10w-30
    By  Christopher,  a  Verified Buyer  from  WV  on  August 06, 2021
    Love this oil run it in my new car as well all my 05 excellent protection
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Excellent product!!
    By  BRAD,  a  Verified Buyer  on  July 12, 2021
    Read many great reviews, and tried on a recommendation. This is now the only oil I will run in any of my vehicles.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great Product
    By  MICHAEL,  a  Verified Buyer  from  Winnemucca, NV  on  July 07, 2021
    I love this oil. It allows me to go much further between oil changes. I drive a lot, this is much better than using conventional petroleum oil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Greatest oil on earth
    By  MIKE,  a  Verified Buyer  from  San Diego  on  June 26, 2021
    I've been using Amsoil since the 70's. I won't use anything else.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Great product
    By  CHRIS,  a  Verified Buyer  from  Iowa  on  May 28, 2021
    Fast shipping on a great product. Always great service.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Awesome
    By  NATHANIEL,  a  Verified Buyer  on  May 21, 2021
    It has held better oil pressure than the rottella I was running so I will definitely be using again
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 4 star rating
    Tractor Diesel Oil
    By  JERRY,  a  Verified Buyer  from  Ruston, Louisiana  on  May 01, 2021
    Diesel Tractor Engine Oil and so far so good
    Was this review helpful?
  • 5 star rating
    Great product
    By  JOHN,  a  Verified Buyer  on  April 29, 2021
    Happy with ams oil. Been using them for 2 years now. Great customer service, and if you get the member ship you save some good money
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Top quality
    By  SHELDON,  a  Verified Buyer  from  Woodstock, Ga.  on  April 01, 2021
    I have used a lot of different oil brands in my years of driving and servicing all types of engines. This oil never breaks down or loses pressure in the whole life of service. Highly impressed !!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    By  CORY,  a  Verified Buyer  on  March 28, 2021
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?