AMSOIL SAE 15W-40 Heavy-Duty Diesel and Marine Oil
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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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$10.75 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
AMSOIL10W-30/SAE 30 Synthetic Heavy-Duty Diesel Oil
 
4.9

(based on 130 reviews)

Ratings Distribution

  • 5 Stars

     

    (124)

  • 4 Stars

     

    (5)

  • 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 130 customers

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5.0

have purchased this product repeatedly

By 

from Springfield,IL

Verified Buyer

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

I use this particular product in both my diesel powered Motor home, and my F350 truck. I used oil testing to determine oil change periods and have saved considerable money over fossil based oils. In addition easier starts, and increased mileage have added to the positive results of the AMSOIL use

  • How would you describe yourself?:
  • I'm a full-on gearhead
  • What kind of vehicle/equipment do you have?:
  • 1997 F350 7.3 l diesel

(1 of 1 customers found this review helpful)

 
5.0

Still using

By 

from Jackson mo

Verified Buyer

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

Been using in 06 chevy 3500 has 253,000 uses a qt, in 25000 miles can't complain !

  • How would you describe yourself?:
  • I'm a DIY handyman
 
5.0

Continues to perform the best.

By 

from Colorado

Verified Buyer

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

Been using this for years and have been validated time and time again. This is the best!

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Dodge Ram 2500, diesel, 260,000 miles.
 
5.0

No oil close to this product

By 

from Bardstown ky

Verified Buyer

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

Run it in both of my duramax trucks one has 260 thousand miles other one Amsoil is all it's ever had both all clean as gold

  • How would you describe yourself?:
  • I love my vehicles / toys
  • What kind of vehicle/equipment do you have?:
  • Trucks tractors other farm equipment
 
5.0

I only use Amsoil products

By 

from Cosby,TN

Verified Buyer

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

I use Amsoil 10W30/SAE30 in my Massey Furguson compact diesel tractor. I've used this oil from day one. My tractor was delivered and I drained the oil that day and changed the filter. I do this with everything I own . Amsoil is the best..

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • Massey Furguson compact diesel tractor.
 
5.0

TRUST YOURSELF AND USE AMSOIL PRODUCTS

By 

from HUNTINGTON BEACH, CA.

Verified Buyer

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

ALL MY CARS AND RV USE AMSOIL OIL AND FILTERS AND HAVE NOT HAD ANY ISSUES USING THEM. ALL RUN COOLER AND SMOOTHER. THE ONLY OIL I WIL USE. ALSO USE ALL THERE OTHER PRODUCTS TOO.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • DIESEL RV, TRUCK, SUV, VAN
 
5.0

Get the most out of your oil!

By 

from Brandenburg, KY

Verified Buyer

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

I tried this oil the first time I ran it for 14,000 miles it test still good. The second time I ran it 19,000 miles, it still tested good. I may change the filter at 20,000 and go for 25,000 this time we will see how it goes. I think my Duramax likes it too!!!

  • How would you describe yourself?:
  • I use AMSOIL products for my business
  • What kind of vehicle/equipment do you have?:
  • 2005 Chevy 3500 Silverado

(1 of 1 customers found this review helpful)

 
5.0

I buy this oil all the time.

By 

from Chiefland, FL

Verified Buyer

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

I use this product in my diesel tractor and small gas engines.

  • How would you describe yourself?:
  • I'm a DIY handyman
  • What kind of vehicle/equipment do you have?:
  • I have to many vehicals/equipment to lis
 
5.0

Grwat product

By 

from Hardy VA

Verified Buyer

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

Excellent oil!! Performs just like all Amsoil products do.

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

I would buy this product again

By 

from New Richmond WI

Verified Buyer

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

Run this oil in my 8000# open diesel truck. it has been ran in this truck from the time it was new.

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

Displaying reviews 1-10

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