Apparatus and method for blending oil on a marine vessel

An oil blending system for a marine diesel two-stroke engine and/or generator comprising:

• a blender having at least one inlet for receiving a lubrication oil and at least one other component and at least one outlet for outputting a mixed lubrication oil composition to the engine or generator;
• at least one sensor for monitoring the engine or generator;
• and
• a blender controller configured to:
• receive parameter data on the current lubrication oil status used in the engine or generator and receive parameter data on the current engine and/or generator status from the at least one sensor for monitoring the engine or generator;
• compare the parameter data on the current lubrication oil status against a predetermined parameter range based on the current engine and/or generator status;
• determine whether the currently used lubrication oil is within the predetermined parameter range;
• and
• if the current lubrication oil is outside the predetermined parameter range, determine a new lubrication oil composition for the engine or generator.