Mobilgard 5100
Mobilgard 5100 is a premium quality marine diesel engine cylinder oil developed for modern two-stroke crosshead engines operating under demanding conditions. The formulation is designed to perform at elevated peak firing pressures and liner temperatures while delivering balanced performance and strong protection against corrosive wear. The high base number formulation helps optimise cylinder oil feed rates while maintaining effective lubrication.
One of the key advantages of Mobilgard 5100 is its excellent corrosion protection. The high alkalinity reserve helps neutralise acids formed during combustion, protecting cylinder liners and piston rings in highly corrosive engine environments. This contributes to reduced wear and improved engine durability.
Mobilgard 5100 also provides strong thermal and oxidation stability. The formulation helps reduce deposit and sludge formation, keeping engine components cleaner. Superior detergency performance helps maintain piston cleanliness and improve lubrication distribution across cylinder surfaces.
Another important benefit is its balanced viscosity and low volatility. The oil maintains strong film retention and lubricant distribution while allowing potentially lower cylinder oil feed rates. This can help reduce oil consumption and improve operating efficiency in modern marine engines.
Mobilgard 5100 is recommended for use in marine crosshead engines operating under a wide range of conditions, including slow steaming and high load applications. The oil meets requirements for modern two-stroke engines from major manufacturers and supports reliable long-term engine performance.
Physical characteristics include SAE 50 viscosity grade with kinematic viscosity of approximately 233 mm²/s at 40°C and 20 mm²/s at 100°C. Mobilgard 5100 has density of approximately 0.957, flash point of approximately 253°C and pour point of approximately −24°C. Total base number is approximately 100, providing strong acid neutralisation and corrosion protection.
