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PETROCURE SHIELD SERIES DIESEL ENGINE OIL 20W50 API CI-4/SL
Description
Description
Petrocure Shield 20W50 is a high-performance semi-synthetic (synthetic blend) diesel engine oil developed to provide strong engine protection, good thermal stability, and reliable wear resistance for both diesel and gasoline engines. Formulated to meet API CI-4/SL specifications, this oil offers effective deposit control, reduced engine wear, improved oxidation resistance, and strong soot handling, helping maintain engine cleanliness and longer service life.
Blended with a combination of high-quality synthetic and mineral base oils, Petrocure Shield 20W50 supports extended drain performance, stable viscosity, and dependable lubrication under high-temperature and heavy-load conditions. It is suitable for commercial fleets, heavy-duty trucks, and industrial diesel and gasoline engines.
Available API
CH-4
CH-4/SL
Applications
Recommended for heavy-duty diesel engines used in trucks, buses, and construction equipment.
Suitable for fleet vehicles, agricultural machinery, and industrial diesel engine applications.
Ideal for both turbocharged and naturally aspirated diesel and gasoline engines.
Designed for modern engines equipped with EGR (Exhaust Gas Recirculation) and SCR (Selective Catalytic Reduction) systems.
Well-suited for high-mileage engines that require strong protection against wear and oil consumption.
Features & Benefits
Excellent Wear Protection – Helps reduce engine friction and supports long-term durability.
Improved Oxidation & Thermal Stability – Helps prevent oil breakdown and sludge buildup.
Extended Drain Capability – Supports longer engine life and reduced maintenance intervals.
Effective Soot & Sludge Control – Helps keep engines cleaner and operating efficiently.
High Viscosity Index – Maintains reliable performance across a wide temperature range.
Strong High-Temperature Protection – Suitable for heavy-duty and high-load operating conditions.
Multi-Fleet Compatibility – Designed for use in both diesel and gasoline engines.
Improved Fuel Efficiency – Low-friction formulation helps support better fuel economy.
Performance Standards
Meets API CI-4, CH-4, CG-4, CF-4, CF for diesel engines and API SL, SJ for gasoline engines, or equivalent specifications.
Compatible with ACEA E7, E5, E3 and A3/B3, A3/B4 performance standards.
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 engine brands.
Key Properties
Physical Properties | |
Properties | 20W50 |
API / ACEA Classification | CI-4 |
Appearance | Bright & Clear |
Specific Gravity @15°C | 0.865 |
Flash Point °C | 230 |
Pour Point °C | -30 |
Viscosity @40 °C, cSt | 113.75 |
Viscosity @100 °C, cSt | 14.90 |
Viscosity Index | 136 |
Total Base No, mg KOH/g | 11.50 |
Cold Cranking Viscosity, cP | 6100 @ -20°C |
















