Mobilgard 540 X
Mobilgard 540 X is a premium high-performance marine diesel engine cylinder oil developed for modern two-stroke crosshead engines operating on a wide range of fuels. The formulation is designed to perform under elevated peak firing pressures and liner temperatures encountered in engines operating on residual fuel oil, distillate fuels and liquified natural gas (LNG). Advanced detergency technology and a balanced base number help optimise feed rates while maintaining effective lubrication.
One of the key advantages of Mobilgard 540 X is its excellent deposit control. The advanced additive system helps manage deposit formation in high-temperature combustion environments, particularly in LNG-fuelled engines. This contributes to cleaner piston and liner surfaces and improved engine reliability.
Mobilgard 540 X also provides strong resistance to oxidation and wear. The formulation protects cylinder liners and piston rings while helping reduce component wear rates. Low volatility ensures effective lubricant distribution and strong oil film retention even when operating at reduced cylinder oil feed rates.
Another important benefit is its versatility across fuel types. Mobilgard 540 X is suitable for marine crosshead engines operating on residual fuels, distillate fuels and continuous LNG operation. The balanced base number helps manage acid formation while maintaining engine cleanliness and lubrication performance.
Mobilgard 540 X is recommended for use in modern marine crosshead engines requiring reliable lubrication across varying operating conditions and fuel applications. The formulation supports reduced feed rates, improved cleanliness and extended component life.
Physical characteristics include SAE 50 viscosity grade with kinematic viscosity of approximately 232 mm²/s at 40°C and 20 mm²/s at 100°C. Mobilgard 540 X has density of approximately 930 kg/m³ at 15.6°C, flash point of approximately 268°C and pour point of approximately −27°C. Total base number is approximately 40, providing balanced acid neutralisation and deposit control.
