AMSOIL Heavy-Duty Synthetic 15W-40 Diesel OilNew for 2017. A value-priced synthetic 15W-40 diesel engine oil that meets the API CK-4 specification. Also meets the Ford standard for all model year Power Stroke diesel engines. Suitable for new and older diesel engines.

Synthetic Diesel Oil Package sizes include:
1-Quart Bottle (or buy case of 12)
1-Gallon Bottle (or buy case of 4)
2.5-Gallon Bottle (or buy in twin pack)
30-Gallon Drum, 55-Gallon Drum or 275-Gallon Tote

Oil Depot can offer AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil at wholesale prices in Canada or the United States. Request a wholesale price list using the contact form on this page.

Applications For AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil

  • API CK-4/SN, CJ-4, CI-4+, CF
  • Chrysler MS 10902
  • Ford WSS-M2C171-F1 (all model year Power Stroke engines)
  • Volvo VDS4.5, VDS4, VDS3
  • Mack EOS-4.5, EO-O
  • Renault RLD-4, RLD-3
  • Cummins CES20086, CES20081
  • Caterpillar ECF-2, ECF-3, ECF-1-a
  • DDC 93K218, 93K215, 93K214
  • DFS 93K222
  • ACEA E9, E7
  • MB 228.31
  • MAN 3575
  • MTU Type 2.1, II, I
  • JASO DH-2
  • Deutz DQC III-10LA

Features and Benefits Of AMSOIL Heavy-Duty Synthetic 15W-40 Diesel OilDetroit Diesel DD13 Engine Scuffing Test Pictures

  • Outstanding wear control
  • Value-priced
  • Resists oil burning
  • Promotes clean engine internals
  • Maintains consistent viscosity throughout service interval
  • Pours down to -38°C

Serious Wear Protection

AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil was subjected to the Detroit Diesel DD13 Engine Scuffing Test. This test measures a diesel engine oil’s ability to resist cylinder bore and piston ring wear. AMSOIL Heavy-Duty Synthetic 15W-40 outpaces the minimum standard of this wear test by 400%.

Fights Oil Consumption

AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil offers a 66% improvement over the API CK-4 volatility minimum. Expect long-lasting viscosity protection from this product.

Excellent Cold Weather Performance AMSOIL Synthetic Diesel Oil Consumption Chart

With a cold pour point of -38°C (-36°F), Heavy-Duty Synthetic 15W-40 provides reliable cold-start protection.

Service Life Of AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil

Change AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil at the interval prescribed by the vehicle owner’s manual or as indicated by oil life monitoring systems. Service intervals can be extended when employing oil analysis recommendations. Install a new oil filter at every oil change.

Mixing AMSOIL Synthetic Diesel Engine Oil With Other Brands

AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil is compatible with all other brands of conventional, semi-synthetic and synthetic diesel engine oils. While you can safely mix AMSOIL Synthetic Diesel Oil with other brands, this will reduce the drain interval and performance capabilities of AMSOIL diesel oil.

The use of any aftermarket diesel oil additives is definitely not recommended.

Specifications of AMSOIL 15W-40 Heavy-Duty Synthetic Diesel Oil (ADP)

Kinematic Viscosity @ 100°C, cSt (ASTM D-445)


Kinematic Viscosity @ 40°C, cSt (ASTM D-445)


Viscosity Index (ASTM D-2270)


CCS Viscosity @ -20°C, cP (ASTM D-5293)


Pour Point °C (°F) (ASTM D-97)

-38 (-36)

Noack Volatility (DIN 51581) 250°C for 1 hour, % weight loss


Total Base Number


High Temperature/High Shear Viscosity, cP (ASTM D-6481)


Sulfated Ash Content, wt. %


AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil
A full-synthetic heavy-duty 15W-40 diesel motor oil for pick-up and heavy-duty applications.
Manufacturer: AMSOIL
Model: Heavy-Duty Synthetic 15W-40 Diesel Oil
Product ID: ADP