The Alpha Lubricator System, Fig. 1, available for all MAN B&W MC/MC-C two-stroke engines, has an algorithm controlling cylinder oil dosage proportional to the sulphur content in the fuel. This algorithm is referred to as Alpha Adaptive Cylinder-oil Control (Alpha ACC).

To explore the potential savings with Alpha ACC, a large scale testing programme is in progress on MAN B&W MC/MC-C type engines in service for a number of owners.