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AMSOIL Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil

Product code : DMEQT-EA

4.9 star rating Read 1,544 reviews

Customer Rating

4.9

92% would recommend

  • 5 1479
  • 4 45
  • 3 9
  • 2 3
  • 1 8

AMSOIL Signature Series 15W-40 100% Synthetic Max-Duty Diesel Oil

4.9 star rating Based on 1,544 reviews
  • 5 star rating
    By  KIT,  a  Verified Buyer  from  Los Ojos NM  on  February 04, 2021
    I really enjoy this product. I can change my oil once a year or at 25,000 miles. In the long run this product saves me money.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  SCOTT,  a  Verified Buyer  on  February 03, 2021
    270,000 miles, still going strong
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  JARED,  a  Verified Buyer  on  February 02, 2021
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  WAYNE,  a  Verified Buyer  from  Bethlehem NH  on  January 31, 2021
    Amsoil Best dam products on the planet.............. Bar none...........
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  WILLIAM,  a  Verified Buyer  on  January 28, 2021
    I change my oil every 5 to 6 thousand miles. I have 157,000 miles on my Cummins and uses about a half pint of oil. Been using Amsoil since I had 80,000 miles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  BEN,  a  Verified Buyer  from  Maryland  on  January 28, 2021
    Wanted to start off my new tractor with its first oil change with a proven product that I trust and would recommend to any one, I want to keep my tractor for many years so why not provide the best insurance policy that I could get
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Truck loves it
    By  GARY,  a  Verified Buyer  from  Hampton Va  on  January 27, 2021
    My trucks Duramax loves this. Anywhere I’m at in this country, I’ll always be able to get Amsoil the same day I need it.
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  • 5 star rating
    By  SETH,  a  Verified Buyer  on  January 26, 2021
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great stuff
    By  LANCIER,  a  Verified Buyer  from  Fl  on  January 26, 2021
    I can say if I would of know Amsoil as growing up it’s great and can’t say bad about it
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  JESSE,  a  Verified Buyer  from  Ratcliff Ar  on  January 24, 2021
    Great oil. Instant oil pressure on star up in cold weather.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  ROBERT,  a  Verified Buyer  on  January 24, 2021
    So far awesome product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  MIKE,  a  Verified Buyer  from  Dodgeville Wisconsin   on  January 22, 2021
    The top 2 best, most honest mechanics I know recommend Amsoil. I've been using it for a couple years now and agree it's the best. Most noticeable to me is starting my diesel in the winter has improved as I don't have to plug it in anymore and it warms up faster. Also like not having to change the oil as often. Worth the money. Mike
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  RICKY,  a  Verified Buyer  on  January 21, 2021
    This is very good oil for my 6.7 diesel. This is the best oil I have used in any of my diesel trucks.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    By  MATTHEW,  a  Verified Buyer  on  January 21, 2021
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    2.5 Gallon size
    By  SCOTT,  a  Verified Buyer  on  January 20, 2021
    I didn't realize there was such a size until I browsed the Amsoil site. I run the PPE filter on my Duramax so a big jug and small jug does the job with no leftovers. So convenient to get order sent to my home.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Only oil for my trucks
    By  ANDREW,  a  Verified Buyer  on  January 19, 2021
    Love this oil, I have been using it for years
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil
    By  LORRAINE,  a  Verified Buyer  from  Ontario,CA  on  January 19, 2021
    Runs smooth no oil burn
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Satisfied as Usual with Amsoil
    By  SCOTT,  a  Verified Buyer  from  Mississippi  on  January 19, 2021
    Quick delivery for a superior product, use Amsoil in all my vehicles
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    By  ALBERT,  a  Verified Buyer  from  Cold Lake, Alberta, Canada  on  January 19, 2021
    I did find that this lubricant worked on reverse in saying it will increase fuel mileage, my with backwards. I still continue using this oil for my 2015 GMC 3500 HD Diesel engine
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    best oil
    By  RODNEY,  a  Verified Buyer  on  January 19, 2021
    best oil fastest service
    Bottom Line
    Yes, I would recommend this to a friend.
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