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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
More about AMSOIL Reviews

REVIEW SNAPSHOT®

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

(based on 102 reviews)

Ratings Distribution

  • 5 Stars

     

    (97)

  • 4 Stars

     

    (4)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

99%

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 102 customers

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5.0

Towing in the Rocky Mountains

By 

from Denver, CO

Verified Buyer

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

The reason I went with Amsoil was because I tow heavy up the mountains and wanted a full synthetic that I knew I could depend on. This full synthetic 15w-40 does everything I need it to. Keeps my engine running like new and I only have to change it every 10,000 miles. Awesome job, you definitely have a lifetime customer!

  • How would you describe yourself?:
  • I'm a professional mechanic
  • What kind of vehicle/equipment do you have?:
  • Powerstroke
 
5.0

Best oil a serious motorist can ask for.

By 

from Wyoming

Verified Buyer

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

Amsoil is the best synthetic motor oil I have used period. I use this in all my trucks and equipment and with very high miles and high hours. Each and everyone operates excellent.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 2006 gmc duramax
 
5.0

I will keep buying this everytime I change my oil

By 

from Mendon Ohio

Verified Buyer

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

The only oil I have ever used that frees up extra horsepower

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • 2000 F-250 Superduty with a 7.3
 
5.0

I use Amsoil in eveything I own.

By 

from Upstate New York

Verified Buyer

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

Amsoil is used in my truck, suv's, compact diesel tractor, garden tractor, roto-tiller, pushmower, and snow blower. I service small engines and yard equipment as a hobbie. Amsoil 4 Stroke 10w-30 is an amazing product. All of the Amsoil products that I use are high quality and a great value. You get what you pay for.

  • How would you describe yourself?:
  • I'm a professional mechanic
 
5.0

5.9 Cummins

By 

from San Bernardino CA

Verified Buyer

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

I have been using Amsoil Diesel marine oil for over 10 years on my 2004 Dodge common rail I have no complaints for the price I pay for....(You get what you pay for) Good product no leaks,overheating,knocking or any issues with oil. 123,000 miles and going strong.....Even my diffs and trans use Amsoil...

  • How would you describe yourself?:
  • I'm a professional mechanic
  • What kind of vehicle/equipment do you have?:
  • 2004 Dodge Ram 3500 4x4 Diesel
 
5.0

I believe in this oil.

By 

from Hidden Valley Lake, CA

Verified Buyer

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

This is a fantastic oil. I love the fact my oil change intervals are longer. I have been using this for many years. Almost have 200,000 miles on my 7.3 liter and its still going strong.

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • 1999 Ford F250 Diesel Superduty
 
5.0

Love this product

By 

from Louisville ky

Verified Buyer

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

Drive a lot this product seems to help truck run smoother

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Ford F-250 diesel

(1 of 1 customers found this review helpful)

 
5.0

AMSOIL is truly the best real Synthetic oil out there.

By 

from Las Vegas NV

Verified Buyer

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

AMSOIL is truly the best real Synthetic oil out there and i will not use any other oil for my trucks and cars. Thank You AMSOIL for standing by your product and so do I !

Kevin Broyles

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Ford F350
 
5.0

Until amsoil makes something better

By 

from San Diego

Verified Buyer

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

Run my offshore boats Hard, keep them at running for hours at 5500 rpm.
My custom built diesel truck tows all over the country carrying heavy loads.
Run the Marine amsoil in both.
Blew a coolant hose pulling my offshore boat from Bodega bay , ran for 27 miles with no coolant till I got home. Diesel never once thought about overheating.

  • How would you describe yourself?:
  • I love my vehicles / toys
 
5.0

Great oil

By 

from North Augusta

Verified Buyer

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

Used for years in truck.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • F-250 Diesil

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