Greyhound G-Premium 15W-40 CK-4 5L
Greyhound G-Premium 15W-40 CK-4 5l is a premium heavy-duty diesel engine oil engineered for high performance under severe operating conditions. It meets the requirements of modern low-emission engines while remaining fully backward-compatible with older diesel technologies.
This formulation provides stable viscosity, strong thermal resistance and long-drain performance for fleets operating under high temperature, heavy load, stop-start cycles, or extended idling.
Applications
• Heavy-duty diesel engines, turbocharged or naturally aspirated
• Modern low-emission engines requiring API CK-4
• Older engines requiring API CJ-4, CI-4, CH-4 (fully backward-compatible)
• Trucks, bakkies, 4×4 vehicles and vans
• Construction, mining, agricultural and industrial equipment
• Mixed fleets working in hot, dusty or high-load environments
Performance Features
• Excellent wear protection for pistons, liners and bearings
• High oxidation resistance for extended service intervals
• Shear-stable viscosity for consistent protection under load
• Strong soot handling and deposit control
• Enhanced thermal stability for engines operating at high temperatures
• Reduced oil consumption and minimal volatility
• Protects against sludge, varnish, corrosion and rust
• Designed for long-life fleet operation and reliability
Specifications & Approvals
• SAE: 15W-40
• API: CK-4 (backward compatible with CJ-4, CI-4, CH-4)
• Meets requirements of major diesel engine manufacturers
• Suitable for EGR, SCR and DPF-equipped engines where CK-4 is recommended
Typical Uses
• Long-haul transport fleets
• Stop-start urban delivery vehicles
• High-temperature operating environments
• Heavy towing and load-bearing vehicles
• Agricultural tractors and machinery
• Earthmoving, construction and generator engines







