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

SAE 15W-40 Heavy-Duty Diesel and Marine Oil Product Image
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$10.40 Retail Price (USD)
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Product Code: AMEQT-EA
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Engineered for pre-2007 diesel engines in on-road applications as well as all model year diesel engines in off-road applications. High 12 TBN controls acids from combustion blow-by and EGR. Additives control soot thickening, oxidation and wear. Extended drain capabilities reduce downtime and motor oil expenses.

AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil is a premium diesel oil that provides excellent performance in all types of diesel engines where highly effective control of wear and deposits is vital. Engineered with heavy-duty dispersant/detergent additives, its Total Base Number (TBN) of 12 neutralizes acids and controls soot thickening from exhaust gas recirculation (EGR) and blow-by to protect against corrosion, cylinder bore polishing (wear), varnish and sludge deposits. AMSOIL 15W-40 Diesel Oil resists heat and breakdown better than conventional petroleum oils for long-lasting performance and protection.

AMSOIL, the leader in automotive synthetic lubrication, produced the world’s first API qualified synthetic motor oil in 1972. Trust the extensive experience of AMSOIL The First in Synthetics® to do the best job protecting your engine.

Extends Drain Intervals
AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil can extend drain intervals far beyond those recommended for conventional petroleum oils. Its unique synthetic formulation and long-drain additive chemistry deliver maximum engine protection, cleanliness and performance over extended drain intervals, reducing vehicle maintenance and waste-oil disposal costs.

Controls Soot and Wear
AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil is heavily fortified with detergent/dispersant additives and is naturally resistant to soot. It is designed to keep soot particles suspended independently and prevent them from aggregating to form larger, wear-causing particles. Viscosity increase is minimized and soot-related wear is reduced.

Reduces Oil Consumption and Emissions
AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil has lower volatility than conventional petroleum oils. Oil consumption and emissions are minimized due to less vapor passing into the combustion chamber. Lower volatility helps AMSOIL 15W-40 Diesel Oil retain its viscosity after high-temperature service for continued dependable protection.

Excellent Cold-Flow Properties
AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil eases cold-weather starting (down to -44°F) and provides vital startup lubrication to help prevent engine wear. AMSOIL Synthetic Heavy Duty Diesel Oil outperforms conventional 15W-40 petroleum oils and minimizes the impact of cold-weather operation.

APPLICATIONS
AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil is engineered for use in a wide variety of light- and heavy-duty applications, including over-the-road trucks, off-road construction, marine engines, farm equipment, mining, industrial (pumps & generators) and personal automotive or commercial transportation. It is excellent for use with low- or high-sulfur diesel fuels in standard, turbocharged or supercharged engines, including diesels equipped with EGR systems.

AMSOIL Synthetic Heavy Duty Diesel & Marine Motor Oil is recommended for diesel engines, gasoline engines and other applications that require any of the following specifications:

  • SAE 15W-40
  • API CI-4+/CI-4/CH-4/CF/CF-2/SL/SJ
  • ACEA A3/B3, E2, E3, E5, E7
  • Global DHD-1
  • JASO DH-1
  • Mack EO-M, EO-N
  • DDC 93K214
  • Caterpillar ECF-1A, ECF-2
  • Cummins CES 20076, 20077, 20078
  • Volvo VDS-2, VDS-3
  • MB 228.1, 228.3, 229.1
  • MAN 271, 3275
  • MTU Type II

COMPATIBILITY
AMSOIL Synthetic Heavy Duty Diesel & Marine Oil is compatible with conventional and synthetic motor oils. Mixing AMSOIL motor oils with other oil, however, will shorten the oil's life expectancy and reduce the performance benefits.

AMSOIL does not support extended drain intervals where oils have been mixed.

Aftermarket oil additives are not recommended for use with AMSOIL motor oils.

SERVICE LIFE
AMSOIL Synthetic Heavy Duty Diesel and Marine Motor Oil is recommended for extended drain intervals in unmodified, mechanically-sound vehicles or equipment as follows:

Diesel Engine Service
Three times (3X) OEM* recommendation, not to exceed 50,000 miles/600 hours or one year, whichever comes first. Drain intervals may be extended further with oil analysis.

Gasoline Engine Service
Two times (2X) OEM* recommendation, not to exceed 15,000 miles or one year, whichever comes first.

*Operating conditions and drain intervals for severe and normal service are defined by the OEM. Refer to your owner’s manual.

Note: Extended drain intervals are not recommended when using biofuels containing >10% ethanol or 5% biodiesel (B5). Follow OEM drain intervals or extend drain intervals with oil analysis.

HEALTH & SAFETY
This product is not expected to cause health concerns when used for the intended application and according to the recommendations in the Material Safety Data Sheet (MSDS). An MSDS is available via the Internet at www.amsoil.com or upon request at (715) 392-7101. Keep Out of Reach of Children. Don’t pollute. Return used oil to collection centers.

For warranty information, visit www.amsoil.com/warranty.aspx.


AME Package Sizes
Code Package Size Unit of Measure Product
AMEQT (AMEQT-EA) Quart Each SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AMEQT (AMEQT-CA) Quart Case of 12 SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AME1G (AME1G-EA) Gallon Each SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AME1G (AME1G-CA) Gallon Case of 4 SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AMETP (AMETP-EA) 2.5-Gallon Each SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AMETP (AMETP-CA) 2.5-Gallon Case of 2 SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AME30 (AME30-EA) 30-Gallon Drum Each SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AME55 (AME55-EA) 55-Gallon Drum Each SAE 15W-40 Heavy-Duty Diesel and Marine Oil
AME27 (AME27-EA) 275-Gallon Tote Each SAE 15W-40 Heavy-Duty Diesel and Marine Oil
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REVIEW SNAPSHOT®

by PowerReviews
AMSOILSAE 15W-40 Heavy-Duty Diesel and Marine Oil
 
4.9

(based on 90 reviews)

Ratings Distribution

  • 5 Stars

     

    (85)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

98%

of respondents would recommend this to a friend.

Most Liked Positive Review

 

Absolutely great

I have used this oil from my first oil change at 5,000 miles with Amsoil absolute filters. Test oil at 25000miles change filter and run another 10000 miles. Tests have all came back with...Read complete review

I have used this oil from my first oil change at 5,000 miles with Amsoil absolute filters. Test oil at 25000miles change filter and run another 10000 miles. Tests have all came back with no viscosity breakdown, no metals or any other abnormalities. I now have 160,000 miles and have never had to add any oil other than what it takes to fill the filter. The service is second to none and so are Amsoil products.

VS

Most Liked Negative Review

 

Diesel Oil

My 1996 Ford F-250, 7.3 Powerstroke never leaked oil until I started using this product. Only 137000 miles.
Works well in inboard boat engine.

My 1996 Ford F-250, 7.3 Powerstroke never leaked oil until I started using this product. Only 137000 miles.
Works well in inboard boat engine.

Reviewed by 90 customers

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5.0

Why would't you?

By 

from Washington

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

I have been using these products for many years in gasoline and diesel applications. Big plus is the ability to set and forget for a year is quite nice. With having multiple vehicles in my driveway and having to work on many others means my maintenance needs to be transparent to all of the other work. This product in particular has kept my engine safe and worry free. My truck is from the showroom floor in 2003 (6.0l) and she is not allowed into the shop accept for programming or tires. Those are my rules as well as for all the rest in my driveway. I will not accept inferior products. Thank you Amsoil.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • car/truck/jeep/classic/atv
 
5.0

Only the best!

By 

from Sherman, Me.

Verified Buyer

Comments about Series 3000 5W-30 Synthetic Heavy Duty Diesel Oil:

I've used Amsoil for over 40 yrs. starting with my 1st VW diesel around 1973 and never had a worry.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Diesel auto & tractor, gas rototiller +

(1 of 1 customers found this review helpful)

 
3.0

Diesel Oil

By 

from NE Wisconsin

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

My 1996 Ford F-250, 7.3 Powerstroke never leaked oil until I started using this product. Only 137000 miles.
Works well in inboard boat engine.

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • All, Jeep, ATV, Snowmobiles, tow rig
 
5.0

Best oil you can buy

By 

from Roseville, CA

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

In my diesel truck I have tested my oil using the AMSOIL filter after 15000 miles and it always tested good and ready dfor additional mileage.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 2003 Dodge 2500 Cummins Diesel
 
4.0

Tend to trust AmsOil

By 

from Texas

Verified Buyer

Comments about 10W-30/SAE 30 Synthetic Heavy-Duty Diesel Oil:

This weight oil sounds a bit to light for a worked hard off road machine, but it's what the AmsOil gurus recommended so that's what I run!

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • Kubota m8540

(1 of 1 customers found this review helpful)

 
5.0

Great diesel engine oil

By 

from Plainwell ,M.I

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

I have been using this in my 5.9 Cummins for four years now. I gained 2 mpg since changing all of the fluids over to Amsoil.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 2002 Dodge 2500 Cummins

(2 of 2 customers found this review helpful)

 
5.0

I will keep using this product in every machine I own

By 

from Williamsport MD

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

I really like this oil. I was using Rotella and burning a gallon every 2 weeks. Since I switched I don't add any oil throughout the 500 hour service. I also get better fuel mileage. I was averaging around 4.8-5 now I average 5.5-5.8

  • How would you describe yourself?:
  • I use AMSOIL products for my business
  • What kind of vehicle/equipment do you have?:
  • Mack R model/ Cat 252

(1 of 1 customers found this review helpful)

 
5.0

Yes

By 

from NH

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

I have used amsoil for years . It's the best & has always improved on its products.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Truck - car - sled - bike

(1 of 1 customers found this review helpful)

 
5.0

Great Product, would buy it again!

By 

from Phoenix, AZ

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

Lasts a full year before the next oil change. I like the 2.5 Gallon jugs the best. Great product!

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Chevy Truck

(1 of 1 customers found this review helpful)

 
5.0

Definitely continue using it.

By 

from undisclosed

Verified Buyer

Comments about SAE 15W-40 Heavy-Duty Diesel and Marine Oil:

We use in 95 Freightliner. We have been using for 4 years or more.

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