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

Product code : DMEQTC-EA

4.9 star rating Read 1,537 reviews

Customer Rating

4.9

92% would recommend

  • 5 1472
  • 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 1,537 reviews
  • 5 star rating
    Great transaction with great oil
    By  Charles,  a  Verified Buyer  from  KY  on  May 04, 2022
    Great oil delivered fast
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Tim
    By  Stew,  a  Verified Buyer  on  May 03, 2022
    Best oil ever!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Love this oil
    By  JEFFREY,  a  Verified Buyer  from  Michigan   on  May 03, 2022
    I switched to this oil from Shell Rotella and I can say that I love it. Reduced engine noise, better gas mileage, etc. It’s pricey but it’s worth it.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Robust & Durable
    By  Dee,  a  Verified Buyer  on  May 02, 2022
    From the moment I transition to amsoil diesel oil, my engine's performance as be spectacular, its as if all it's lubrication needs has finally been met, thanks to diesel oil amsoil outstanding performance
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil signature diesel oil
    By  JOHNNY,  a  Verified Buyer  from  Bronson, fl   on  May 01, 2022
    Absolutely the best. Period.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good Stuff
    By  BRANDAN,  a  Verified Buyer  on  May 01, 2022
    Will be running in the truck until she rots into the ground.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good product at a decent price.
    By  TREVOR,  a  Verified Buyer  on  May 01, 2022
    Good product for a decent price.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Always satisfied!
    By  MARLON,  a  Verified Buyer  from  California  on  April 30, 2022
    Amsoil is #1!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Good product
    By  DAVID A,  a  Verified Buyer  on  April 28, 2022
    I've been using amsoil in my new 6.7 Ford diesel for 2 years. I use it in all my trucks we average 9,500 miles a month a truck per month.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome product and fast delivery!
    By  RICHARD,  a  Verified Buyer  from  AZ  on  April 25, 2022
    My product arrived fast. Instantly noticed a reduction in noise engine in my dodge Cummins. Runs smoother as well! Also put Amsoil synthetic oil in my 2006 Yamaha Rhino. Same great results!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Amsoil synthetic diesel oil
    By  ShastaRose,  a  Verified Buyer  from  Southern Oregon  on  April 25, 2022
    This is a superior synthetic oil. Great for vehicles that are in extreme weather conditions and are used for heavy work.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil in quarts
    By  KEN,  a  Verified Buyer  from  Carson City   on  April 24, 2022
    Picked these up to top off crankcase oil when needed. Also prices are going up as well.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    2007.5 Duramax 2500 Lmm
    By  GABE ,  a  Verified Buyer  from  Covina  on  April 23, 2022
    Switched from Rotella to Amsoil... so glad I did. Worth every cent!
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Fast shipping great oil
    By  Chad,  a  Verified Buyer  from  UT  on  April 20, 2022
    Great oil and filter
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel oil
    By  SCOTT,  a  Verified Buyer  from  Wisconsin   on  April 19, 2022
    Awesome oil
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Exelent
    By  REGINO,  a  Verified Buyer  from  Bensenville il  on  April 18, 2022
    I recomended this product
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Superior products
    By  RONALD,  a  Verified Buyer  from  Phippsburg, Colorado  on  April 14, 2022
    I used Amsoil products since 1980 and have found them superior products.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent
    By  TOM,  a  Verified Buyer  from  Ohio  on  April 14, 2022
    I am amazed at how clean the oil stays now. Bought my 2004 Dodge Ram 5.9 used a few years ago, oil was black, I have put Max Duty in it since I bought it, now I can still see the dipstick through the oil at the next oil change interval and no oil usage, engine only has 82,000 miles though.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    have used for years
    By  WAYNE,  a  Verified Buyer  on  April 14, 2022
    I have used Amsoil in all my vehicles for many years, the diesel oil is used in my 2009 Duramax is still going strong, no oil related problems.
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  • 5 star rating
    GMC Duramax 3500 DRW
    By  JEFF,  a  Verified Buyer  from  Central Illinois  on  April 13, 2022
    I started using AMSOIL in 2020 after buying my current truck. I bought a new rear end cover from Banks. There video's all show using AMSOIL. I figure if it good enough for Banks, it is good enough for me. I have been converting all of my vehicles over to AMSOIL after depleting my inventory of other oils. The AMSOIL never disappoints in performance and shipping or anything else. I have run the engine oil and rear end oil in this truck for two years and love the oil and the service I get from AMSOIL. The shipping has always been very fast. I don't feel the need to stock near as much oil for my vehicles as I have in the past. Love the oils!
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