Method of managing a propulsion system based on health of a lubrication system

A vehicle comprising:

• an engine having a lubrication system;
• a diagnostic unit for determining a lube system fault in the lubrication system in response to an oil pressure;
• a processor for calculating an allowable range of an engine parameter in response to the lube system fault and generating a control signal to control the engine wherein the engine parameter is revolutions per minute;
• and
• a control unit for controlling the engine in response to the control signal to increase an engine speed in response to the engine parameter being lower than the allowable range such that the engine parameter is within the allowable range.