PETROCURE FLEX SERIES DIESEL ENGINE OIL 15W40 API Ck-4

Available Packs

Description

Petrocure Flex 15W40 is an advanced fully synthetic diesel engine oil developed to provide strong engine protection, extended drain performance, and improved fuel efficiency for high-performance diesel engines. Meeting the latest API CK-4 specification, it helps maintain engine cleanliness, reliable wear protection, and compatibility with modern emission control systems in both modern and older diesel engines.

Formulated with high-quality synthetic base oils and advanced additive technology, Petrocure Flex 15W40 offers excellent oxidation stability, shear resistance, and deposit control, supporting long-lasting engine performance under demanding operating conditions. It is suitable for heavy-duty commercial vehicles, construction equipment, agricultural machinery, and industrial applications requiring API CK-4 performance standards.

Available API

CK-4

CJ-4

CJ-4/SN

CI-4

CI-4/SL

CI-4 PLUS

Applications

Suitable for heavy-duty diesel engines used in trucks, buses, construction equipment, and industrial machinery.
Ideal for modern diesel engines equipped with advanced emission control systems such as DPF, EGR, and SCR.
Recommended for long-haul trucks, fleet operations, and off-road heavy-duty equipment.
Compatible with both turbocharged and naturally aspirated diesel engines operating under demanding conditions.
Suitable for agricultural, mining, and marine diesel engines that require high-performance lubrication.

Features & Benefits

Excellent Wear Protection – Helps reduce metal-to-metal contact and supports longer engine life.
Strong Oxidation & Thermal Stability – Helps prevent oil degradation and deposit buildup.
Extended Drain Capability – Supports longer service intervals and helps reduce maintenance costs.
Advanced Soot & Sludge Control – Helps keep engines cleaner for consistent performance.
Improved Fuel Efficiency – Helps reduce internal friction for better efficiency.
Reliable Cold Weather Performance – Ensures smooth start-up and protection in low-temperature conditions.
High Shear Stability – Maintains proper viscosity under heavy loads and high temperatures.
Emission System Compatibility – Suitable for engines equipped with DPF and other exhaust after-treatment systems.

Performance Standards

Meets API CK-4, CJ-4, CI-4+, CI-4, and CH-4 performance standards or equivalent specifications.
Compatible with ACEA E9, E7, and E6 performance requirements.
Supports ILSAC GF-5 equivalent benefits for fuel economy and engine performance.
Suitable for engines from major manufacturers including Cummins, Volvo, Mack, Detroit Diesel, Caterpillar, MAN, Mercedes-Benz, Renault Trucks, and other leading heavy-duty engine brands.

Key Properties

Physical Properties
Properties	15W40
API / ACEA Classification	CK-4
Appearance	Bright & Clear
Specific Gravity @15°C	0.865
Flash Point °C	228
Pour Point °C	-30
Viscosity @40 °C, cSt	120.15
Viscosity @100 °C, cSt	15.35
Viscosity Index	134
Total Base No, mg KOH/g	9.80
Cold Cranking Viscosity (cP)	5900 @ -20°C