PETROCURE FLEX SERIES DIESEL ENGINE OIL 20W50 API CI-4

Available Packs

Description

Petrocure Flex 20W50 is a high-performance fully synthetic diesel engine oil developed to provide strong protection, durability, and thermal stability for heavy-duty diesel engines operating under demanding conditions. Meeting API CI-4 specifications, this oil delivers improved oxidation stability, reliable wear protection, and effective soot control to support engine performance and longer service life.

Formulated with high-quality synthetic base oils and an advanced additive system, Petrocure Flex 20W50 is designed to perform well under high temperatures, heavy loads, and severe operating conditions. It is especially suitable for older diesel engines, high-mileage commercial vehicles, and off-road equipment where higher viscosity oil is required for enhanced protection.

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 agricultural machinery.
Recommended for off-highway vehicles, mining equipment, and industrial diesel generators.
Ideal for older diesel engines that require higher viscosity oil for additional protection.
Compatible with turbocharged and naturally aspirated diesel engines meeting API CI-4 specifications.
Suitable for high-mileage vehicles operating under demanding temperature conditions.

Features & Benefits

Excellent Wear Protection – Helps ensure long-lasting engine durability.
Strong Oxidation & Thermal Stability – Helps prevent oil breakdown and deposit formation.
Improved Soot & Sludge Control – Supports cleaner and more efficient engine operation.
Extended Drain Capability – Helps reduce downtime and maintenance requirements.
Reliable High-Temperature Protection – Suitable for hot climates and heavy-duty applications.
Enhanced Lubrication for Older Engines – Helps reduce oil consumption while maintaining proper viscosity.
Resistance to Shear Breakdown – Maintains stable performance under demanding operating conditions.

Specifications

Meets API CI-4, CH-4, CG-4, CF-4, and CF performance standards or equivalent specifications.
Compatible with ACEA E7, E5, and E3 performance requirements.
Supports ILSAC GF-4 equivalent benefits for improved fuel efficiency.
Suitable for engines from major manufacturers including Cummins, Caterpillar, Detroit Diesel, MAN, Mercedes-Benz, Volvo, Renault Trucks, and other leading diesel engine brands.

Key Properties

Physical Properties
Properties	20W50
API / ACEA Classification	API CI-4, ACEA E7/E5/E3
Appearance	Bright & Clear
Specific Gravity @15°C	0.880
Flash Point °C	240
Pour Point °C	-27
Viscosity @40 °C, cSt	155.2
Viscosity @100 °C, cSt	19.2
Viscosity Index	135
Total Base No, mg KOH/g	10.5
Cold Cranking Viscosity (cP)	7000 @ -15°C
HTHS Viscosity @ 150°C (mPa.s)	4.5