Heavy-Duty Diesel Engine Oil for Superior Protection & Performance
Castrol RX Super Diesel CJ-4 E9 15W-40 is a premium heavy-duty diesel engine oil specially formulated to deliver exceptional protection, improved engine cleanliness, and extended engine life in modern diesel engines. Designed to meet the demanding requirements of Euro IV, V, and VI engines, this advanced lubricant supports engines equipped with EGR, DPF, and SCR emission systems.
Ideal for commercial vehicles, trucks, buses, construction equipment, and fleet operations, Castrol RX Super Diesel ensures reliable performance even under severe operating conditions.
Key Features & Benefits
✔ CJ-4 / E9 Specification – Meets latest industry standards for modern low-emission diesel engines
✔ Excellent Engine Protection – Protects against wear, deposits, soot build-up, and sludge
✔ Enhanced Engine Cleanliness – Advanced detergent technology keeps engine components cleaner for longer
✔ Extended Oil Drain Capability – Supports longer service intervals (as per OEM recommendations)
✔ Improved Oxidation Stability – Maintains viscosity and performance under high temperatures
✔ Compatible with Emission Control Systems – Safe for DPF, EGR & SCR systems
