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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
    DIESEL OIL
    By  JOEY,  a  Verified Buyer  from  North Carolina  on  August 18, 2021
    2019 FORD F250 6.7 DIESEL. BIG INVESTMENT ! TRUST THIS PRODUCT .
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 1 star rating
    Great deal
    By  STEVEN,  a  Verified Buyer  on  August 15, 2021
    This is the best oil that I know of at a price I can live with. Service and communication are top notch
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Nothing But the Best
    By  Big Al,  a  Verified Buyer  from  Texas Gulf Coast  on  August 11, 2021
    I’ve used ASMOIL since 2001 in all of my trucks, tractors and mowers. This is the Best Oil Period. Use it in my 2019 Super Duty without hesitation. Get cha some now and be happy for ever after.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    (6X) 5W-40 Diesel Oil
    By  RANDY,  a  Verified Buyer  from  Wilkerson Pass, CO  on  August 04, 2021
    Since I've switched my entire fleet of Vehicles and equipment to Amsoil, my waste oil has been cut in half and I get better fuel mileage to include the piece of mind of 1 year or 25,000 miles which ever comes first.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    great product
    By  PATRICK,  a  Verified Buyer  from  Texas  on  August 03, 2021
    extremely impressed with this product and the company, from ordering to shipping class A service and product.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Absolutely the best
    By  HAROLD,  a  Verified Buyer  from  New Albany, In.  on  August 01, 2021
    I use Amsoil in my Ram 3500 diesel and travel roughly 4000 miles a week. Amsoil will always be the only oil I use and trust. I drive in all extreme weather conditions and would recommend Amsoil to everyone.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    AMS Oil
    By  Ed,  a  Verified Buyer  from  California   on  July 31, 2021
    I've been using AMS oil for 5 years in my Ram 6.7 Deisel truck and three years on all of my cars. I love the fact the oil I purchase along with filters are a yearly service or 12000 on my cars. Ever since I've been using AMS oil my vehicles sound and run better. I always recommend this oil to my friends and family. Best protection you can buy
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Quality Product
    By  CURTIS,  a  Verified Buyer  from  Colorado  on  July 30, 2021
    I believe the test reports I have read on google. Quality product for my vehicles
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Best of the best
    By  JOHN,  a  Verified Buyer  from  Long Island NY  on  July 29, 2021
    You cannot get better oil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 4 star rating
    Diesel tractor
    By  Richard,  a  Verified Buyer  from  PA  on  July 29, 2021
    This is only oil I have used in my cub cadet tractor since purchased in 2000.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  LOREN,  a  Verified Buyer  from  Ohio  on  July 27, 2021
    Absolutely a great product highly recommended product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Hasn't let me down
    By  JEFF L,  a  Verified Buyer  from  Pensacola, FL  on  July 26, 2021
    I have been running Amsoil diesel oil in my 5.9 cummins for over 10 years without issue. When I recently had the valves adjusted, the mechanic commented on how clean everything looked under the valve cover and saw no signs of unusual wear. That's the kind of report I love to hear.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Duramax
    By  REG,  a  Verified Buyer  from  BC  on  July 25, 2021
    Extended change intervals and lessens oil consumption
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil and filter
    By  MIKe ,  a  Verified Buyer  on  July 25, 2021
    Great oil been using this since 2007. Along with the oil filter and oil stabilizer.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The absolute best!
    By  KEVIN,  a  Verified Buyer  from  Newhall, Ca  on  July 24, 2021
    2nd to none!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil
    By  ANDREW,  a  Verified Buyer  on  July 24, 2021
    I have a 06 duramax and my truck runs great on Amsoil.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great product
    By  JIM,  a  Verified Buyer  from  Jacksonville, Fl  on  July 23, 2021
    Great product, no issues.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    The ONLY oil I use!
    By  JUSTIN,  a  Verified Buyer  from  Forney TX  on  July 22, 2021
    I have a 2008 LMM and used to use T6 (if you are looking at this oil, you should know what that is) cause my grandfather used it in his diesels. Found this, started using it. Everything noticeably smoother. Quick delivery and got a good discount program. Oh, and I get stickers too. Haha
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Reliable and quick delivery
    By  ROBERT,  a  Verified Buyer  from  80134  on  July 12, 2021
    Been using Amsoil for many years knowing the performance of their many products, I will continue to be a loyal customer.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Duramax
    By  DENNIS,  a  Verified Buyer  from  Indiana   on  July 11, 2021
    Love this for my duramax.
    Bottom Line
    Yes, I would recommend this to a friend.
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