The cylinder lube oil consumption represents a large expenditure for an engine operating with the nominal guiding feed rate and, especially for the large bore engines, even a 0.1 g/bhph reduction in the cylinder oil dosage represents a significant yearly saving for the owner. Cylinder lubrication is therefore an important development theme with the aim of reducing the cylinder lube oil dosage while maintaining a satisfactory piston ring/liner wear rate and maintaining or improving the time between overhauls. Reduced lube oil consumption also has a positive impact on the environment as emissions will be lower.