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AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil

Product code : ADOQT-EA

4.9 star rating Read 323 reviews

Customer Rating

4.9

98% would recommend

  • 5 309
  • 4 11
  • 3 1
  • 2 1
  • 1 1

AMSOIL 5W-40 Heavy-Duty 100% Synthetic Diesel Oil

4.9 star rating Based on 323 reviews
  • 5 star rating
    New JD
    By  RAYMOND,  a  Verified Buyer  from  N Florida   on  July 02, 2021
    Second oil change from new at 200 hrs. The Amsoil obviously lubricates better. The engine runs a few degrees cooler.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Excellent Product!!!
    By  RAY,  a  Verified Buyer  from  Geneseo, NY  on  June 14, 2021
    Great products delivered very quickly...
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 3 star rating
    First oil change
    By  JACK,  a  Verified Buyer  on  June 09, 2021
    I have used before only John Deere premium 15W40. I don't feel too much difference how engine runs now....so not quite sure I gain 4X
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  • 5 star rating
    Ca 3126
    By  KIETH,  a  Verified Buyer  on  June 07, 2021
    Amsoil hands down in all my fleet! Gas and diesel vehicles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil product.
    By  clinton,  a  Verified Buyer  from  CO  on  June 03, 2021
    Running quality product increases engine life.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel oil that helps save money
    By  Every day driver ,  a  Verified Buyer  from  Wisconsin  on  June 01, 2021
    This oil is not only good product, but also was able to increase overall MPG by 1.8 miles on avg. This is huge when driving truck everyday several hundred miles.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    diesel oil
    By  Jim,  a  Verified Buyer  from  CO  on  May 31, 2021
    Always love Amsoil wont use any other brand.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    heavy-duty-synthetic-diesel-oil-15w
    By  DENNIS,  a  Verified Buyer  from  Peshtigo, WI  on  May 26, 2021
    Great oil for diesels runs smooth, and quieter even..great price.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel system additive
    By  Ed,  a  Verified Buyer  from  Washington  on  May 22, 2021
    Bought a 2006 Dodge with 5.9 Cummins with 92,0000 miles. Performance was very good at time of purchase. After 2 tanks of fuel using AMSOIL Injector cleaner and Cetane boost, performance increased. Injectors must have had a degree of contamination blocking the nozzles. Much better now.
    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  Nc  on  May 21, 2021
    Best product I have used in all my desiel.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Diesel oils
    By  Eugene,  a  Verified Buyer  from  Brooklyn, NY  on  May 21, 2021
    Good quality oil, oil film is strong.
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Awesome!
    By  JEREMY,  a  Verified Buyer  on  May 21, 2021
    Keeps my oil temps cooler in my 6.0l powerstroke and runs a little quieter
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Oil
    By  KEN,  a  Verified Buyer  on  May 21, 2021
    Works good
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Very happy
    By  THOMAS,  a  Verified Buyer  from  Houma, LA  on  April 28, 2021
    Make my truck run better.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    My 1st gen powerstroke loves this stuff
    By  CHRISTOPHER W,  a  Verified Buyer  from  Idaho  on  April 20, 2021
    Been using this for better than a decade. My ‘97 powerstroke runs better on Amsoil than on any other oil I’ve tried. Idles better, has more power and just overall performance is up when I use it. No lie,
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    I use nothing but Amsoil products
    By  DEL,  a  Verified Buyer  from  Oregon   on  April 19, 2021
    I use nothing but Amsoil in both our vehicles, my Harley, and all my gas powered tools including my chainsaws. Great product.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5 star rating
    Synthetic oil
    By  AL,  a  Verified Buyer  from  Michigan   on  April 16, 2021
    This is the best synthetic oil in market. I’m been using this for very long time on semi trucks and I’m very impressed.
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  • 5 star rating
    Bobcat 753 oil change
    By  CHRIS,  a  Verified Buyer  on  April 15, 2021
    Worked great, nice products
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    #1 OIL
    By  MARK,  a  Verified Buyer  from  Surprise, Arizona  on  April 11, 2021
    Best oil for my dodge ram 2500
    Bottom Line
    Yes, I would recommend this to a friend.
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  • 5 star rating
    Great oil
    By  MATTHEW,  a  Verified Buyer  on  March 31, 2021
    Sent an oil sample in after 15k miles and oil was still performing great
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?

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