Gadinia AL 30 + 40

Specifications, Approvals & Recommendations

· Rolls-Royce, Bergen
· Deutz AG
· MAN B&W Diesel AG
· Simplex (Compact Sterntube Seals)
· API CF

Additional Information

· Advice
Advice on applications not covered here may be obtained from your Shell representative.

· Liner Lacquering
The medium-speed diesel engine is becoming more demanding to lubricate. Higher engine efficiencies are being achieved through engine designs, which incorporate higher cylinder - pressures, higher combustion temperatures, and the use of very high-pressure fuel injection. In some modern distillate fuelled engines, these conditions may lead to the formation of a layer of brown or black lacquer on the cylinder liner surfaces. This can fill in the honing pattern, resulting in a loss of oil control and runaway oil consumption. The condition is paticularly common in severe operation (e.g. overload or high torque conditions). There is also evidence that it is more common where low sulphur (<0.5% wt) distillate fuels are in use.

Main Applications

· Highly rated medium speed diesel engines operating under high load or overload conditions.
· General ship application, including gears, where specialist lubricants are not required.

Performance, Features & Benefits

· Improved Reliability
Excellent piston and crankcase cleanliness, which helps to maintain engine efficiency.
Load carrying properties required for use in reduction gears.
· Lower Maintenance Costs
Excellent liner lacquer control that maintains lubricating oil consumption at its normal level.
A high level of protection against bore polishing - another cause of high oil consumption.
· Re-assurance
Protection for engines where cylinder liner lacquering is likely to occur.