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SAE 15W-40 Heavy-Duty Diesel and Marine Oil

Product code : AMEQT-EA

Recommended for applications specifying API CI-4+ and prior specifications
Controls soot and wear
Reduces oil consumption and emissions
Delivers maximum engine protection over extended drain intervals
Provides outstanding protection and performance in temperature extremes
Try Signature Series Max-Duty 15W-40 for a serious upgrade

Recommended for applications specifying API CI-4+ and prior specifications
Controls soot and wear
Reduces oil consumption and emissions
Delivers maximum engine protection over extended drain intervals
Provides outstanding protection and performance in temperature extremes
Try Signature Series Max-Duty 15W-40 for a serious upgrade

SAE 15W-40 Heavy-Duty Diesel and Marine Oil



Premium diesel oil providing excellent performance in diesel engines where highly effective control of wear and deposits is vital. Built with heavy-duty dispersant/detergent additives with 12 TBN, Synthetic Heavy-Duty Diesel & Marine Oil neutralizes acids and controls soot thickening from EGR and blow-by to protect against corrosion, cylinder bore polishing (wear) and varnish/sludge deposits. It resists heat and breakdown and is formulated for extended drain intervals.

See the product data sheet for full details.

CONTROLS SOOT AND WEAR

  • Neutralizes acids and controls soot thickening to protect against corrosion, wear, varnish and sludge deposits
  • Reduces oil consumption and emissions
  • Delivers maximum engine protection over extended drain intervals

EXCELS IN EXTREME TEMPERATURES

  • Provides outstanding protection and performance in temperature extremes
  • Resists heat and breakdown better than conventional oils
  • Eases cold-weather starting and provides vital startup lubrication

 

See the product data sheet for full details.

SAE 15W-40 Heavy-Duty Diesel and Marine Oil



SAE 15W-40 Heavy-Duty Diesel and Marine Oil

  • 5
    Great Oil
    By  GEORGE,  a  Verified Buyer  from  NC  on  January 06, 2022

    Describe the issue

    AMSOIL products are always reliable and ship quickly. Packaging is durable and clean. They've even sent me free bottles of firearm cleaner in which worked so well I purchased them on top of my usual oil orders.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Diesels' best friend
    By  Kent,  a  Verified Buyer  from  OR  on  December 24, 2021

    Describe the issue

    Always use this in every diesel rig. Some now as old as 25 yrs. Never an oil problem. On the road at all times and never down due to oil. Don't use this at your own peril. Peace of mind is crucial.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great product
    By  KENNETH,  a  Verified Buyer  from  Maryville tn.  on  November 06, 2021

    Describe the issue

    Love this product great price to. Going to switch all my vehicles over to amzoil.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Diesel oil
    By  Rod,  a  Verified Buyer  from  MI - Michigan  on  November 01, 2021

    Describe the issue

    Fast shipping high quality product
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Great high quality product
    By  Rod,  a  Verified Buyer  from  MI  on  October 19, 2021

    Describe the issue

    Fast shipping great quality!
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Awesome
    By  MATTHEW,  a  Verified Buyer  on  October 17, 2021

    Describe the issue

    Fast shipping great product
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    15w-40 Diesel/Marine OIl
    By  BEN,  a  Verified Buyer  from  Tulsa  on  September 16, 2021

    Describe the issue

    I have used this oil for many, many years in my 1985 Mercedes Benz 300SD Turbo Diesel and my 1951 John Deere Model R diesel tractor engine with excellent results. Zero failures
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    Series 3000 - 5w-30
    By  BEN,  a  Verified Buyer  from  Tulsa  on  September 16, 2021

    Describe the issue

    This is the best oil for my 2004 John Deere X495 diesel tractor, the pony motor on my 1951 John Deere Model R diesel tractor and all my smaller 4 cycle gasoline engines. Been using it in these applications for years and years with excellent results and zero engine failures.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 3
    Oil life
    By  ROBERT,  a  Verified Buyer  from  Edgewater,(Maryland)   on  September 13, 2021

    Describe the issue

    This oil seems to break down at approximately 125 hours. The oil turned black and got really thin. This caused my oil pressure to drop 7-10 lbs. I’m going to give it one more try before I witch brands. This oil is being used in a Cummins 5.9QSB that is in my boat and they recommend 250 hour oil changes. This oil will never make it that long. Thank you for your time.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?
  • 5
    The only oil i will use in my truck
    By  SCOTT,  a  Verified Buyer  from  Houston  on  September 05, 2021

    Describe the issue

    I have used amsoil in my 5.9 cummins for 11 years now. 230k miles and performs like it is new.
    Bottom Line
    Yes, I would recommend this to a friend.
    Was this review helpful?