AMSOIL OE 15W-40 Synthetic Diesel OilFebruary, 2017- This product has been replaced by AMSOIL Heavy-Duty Synthetic 15W-40 Diesel Oil

OE 15W-40 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

Oil Depot can offer AMSOIL OE Synthetic 15W-40 Diesel Oil in Canada or the United States at wholesale prices. Request a synthetic diesel oil price list using the contact form on your right.

AMSOIL OE 15W-40 Synthetic Diesel Oil is a budget-priced synthetic designed to stay in service for the longest drain intervals that your OEM has to offer and delivers steadfast protection every step of the way. Best of all, it carries the latest API CJ-4 specification, so your warranty is safe. OE 15W-40 is suitable for medium and heavy-duty diesel engines of all model years where a 15W-40 is desired.

Compatible with Modern Diesel Exhaust Treatment Devices

This API CJ-4 15W-40 synthetic diesel engine oil is compatible with all late-model exhaust treatment units including diesel particulate filters.

All Climate Protection

AMSOIL OE 15W-40’s synthetic formula offers something that most regular diesel 15W-40 engine oils can’t, and that is performance and protection at both ends of the temperature spectrum. This OE 15W-40 diesel oil resists thinning and oil burning at high temperatures under heavy loads. In winter, the -38C (-36F) pour point delivers protection and easy starting on cold mornings.

Controls Oil Usage

The hallmark of a good synthetic oil is its ability to resist oil usage during periods of extreme heat and heavy loads. AMSOIL OE 15W-40 synthetic oil keeps the oil level steady and does not thicken after hard use and long hours.

Fights Soot Formation

Soot can be a major contributor to wear in diesel engines. It can cause the engine oil to thicken and can also increase engine wear. AMSOIL OE 15W-40 Synthetic Diesel Oils contains detergents and dispersants that keep soot in suspension and your diesel engine internals clean.

OE 15W-40 Diesel Oil Applications

AMSOIL OE 15W-40 Synthetic Diesel Oil is suitable for the following diesel engine oil specifications:

  • API CJ-4, CI-4+, SM…
  • ACEA E9
  • DDC 93K218
  • Cummins CES 20081
  • MB 228.31
  • CAT ECF-3, ECF-2, ECF-1-a
  • Mack EO-O Plus
  • Volvo VDS-4
  • MAN 3575
  • Renault RLD-3
  • MTU Type 2.1

Mixing AMSOIL Synthetic Diesel Oil with Other Brands

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

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

Service Life

AMSOIL OE 15W-40 Synthetic Diesel Oil is recommended for oil change intervals as stated by the vehicle owner’s manual or as indicated by the oil life monitoring system. Change oil filter at every oil change.


AMSOIL OE 15W-40 Synthetic Diesel Oil (OED)

Kinematic Viscosity @ 100°C, cSt (ASTM D-445)14.5
Kinematic Viscosity @ 40°C, cSt (ASTM D-445)101.3
Viscosity Index (ASTM D-2270)147
CCS Viscosity @ -20°C, cP (ASTM D-5293)<5500
Flash Point °C (°F) (ASTM D-92)230 (446)
Fire Point °C (°F) (ASTM D-92)248 (478)
Pour Point °C (°F) (ASTM D-97)-38 (-36)
NOACK Volatility, % weight loss (g/100g) (ASTM D-5800)<8.0
Total Base Number (ASTM D-2896)9.0
High-Temperature/High-Shear Viscosity, cP (ASTM D-5481)4.3
AMSOIL OE 15W-40 Synthetic Diesel Oil
An low-priced synthetic diesel engine oil that is API CJ-4 licensed. AMSOIL diesel oil provides year-round service and strong wear control. Great for fleets.
Manufacturer: AMSOIL
Model: OE 15W-40 Synthetic Diesel Oil
Product ID: OED