Heavy-Duty Diesel Engine Oil

SAE 15W40 API CK-4
DELUXE SAE 15W40 API CK-4

High-performance diesel engine oil engineered for heavy-duty operation to deliver wear control, soot handling, and dependable protection in high-load and high-temperature service.

API CK-4 Specification

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DELUXE SAE 15W40 API CK-4

SAE 15W40 | API CK-4

DELUXE SAE 15W40 API CK-4 is a high-performance diesel engine oil
formulated with premium virgin base oils and advanced additive
technology. It helps control soot and deposits, protect against
wear, and maintain viscosity stability under heavy-load,
high-temperature, and extended-duty operation.

Product Type

Heavy-Duty Diesel Engine Oil

Performance Level

SAE 15W40 / API CK-4

Package Sizes

3.46 Litres, 1 US QT (0.946 Litres)

Compatibility

Diesel Engines and Mixed Fleets

Soot Control Oxidation Stability Deposit Control Wear Protection High-Load Durability Soot Control Oxidation Stability Deposit Control Wear Protection High-Load Durability

Key Benefits

Why Choose DELUXE SAE 15W40 API CK-4

High-performance diesel engine oil engineered for heavy-duty operation to deliver wear control, soot handling, and dependable protection in high-load and high-temperature service.

Soot Handling

Advanced dispersants help suspend soot particles and reduce sludge formation for cleaner diesel engine internals.

Fast Cold-Start Flow

Reliable cold-flow properties support startup protection and quicker lubrication delivery in cooler conditions.

Thermal Stability

Resists viscosity breakdown and oxidation under high operating temperatures for consistent heavy-duty engine protection.

Outstanding Wear Control

Helps protect liners, bearings, cams, and valve-train components from wear under high-load and long-haul operation.

Deposit & Sludge Control

Strong detergent package helps minimize piston deposits and ring sticking to support performance and service life.

High-Load Durability

SAE 15W40 viscosity provides strong oil-film strength for sustained protection in heavy-duty and high-temperature service.

Technical Data

Performance Specifications

Typical technical characteristics for DELUXE SAE 15W40 API CK-4.

Product Type	Heavy-Duty Diesel Engine Oil
Specification	SAE 15W40 / API CK-4
Appearance	Amber Liquid
Kinematic Viscosity @ 40°C	108 cSt
Kinematic Viscosity @ 100°C	14.9 cSt
Viscosity Index	150
Flash Point (COC)	238°C (460°F)
Pour Point	-30°C (-22°F)
Density @ 15°C	0.870 g/cm3
TBN	10.5 mgKOH/g
Oxidation Stability	Excellent
Primary Packaging	3.46 Litres, 1 US QT (0.946 Litres)

Heavy-Duty Diesel Vehicles

Heavy-duty diesel trucks and buses
Vehicles requiring SAE 15W40 / API CK-4 engine oil
Long-haul and high-mileage operation
Turbocharged diesel engines

Off-Highway Equipment

Construction and agricultural machinery
High-load industrial diesel engines
Reliable protection against soot and deposits
Consistent operation in dusty and hot environments

Severe Service Conditions

High ambient temperatures
Stop-and-go urban operation
Extended high-speed operation
Heavy traffic with repeated thermal cycles