Oil life monitoring system with fuel quality factor

A vehicle comprising:

• an engine having a crankshaft and including an engine oil, the engine configured to combust a fuel to rotate the crankshaft;
• an oil-life monitoring system in communication with the engine and including:
• an engine revolution counter configured to provide an output corresponding to the rotation of the crankshaft;
• and
• a controller in communication with the engine revolution counter and configured to:
• determine the composition of the fuel;
• select a fuel quality penalty factor from a table, the fuel quality penalty factor corresponding to the determined composition of the fuel;
• multiply the output of the engine revolution counter by the fuel quality penalty factor to form an adjusted revolution count;
• and
• aggregate the adjusted revolution count for use in determining remaining oil-life.

A method of calculating the remaining life of an engine oil within a combustion engine comprising:

• determining a composition of a fuel being combusted by the engine;
• selecting a fuel quality penalty factor from a table, the fuel quality penalty factor corresponding to the determined composition of the fuel;
• counting the rotations of a component of the engine;
• computing an adjusted revolution count by multiplying the rotations of the component of the engine by the fuel quality penalty factor;
• aggregating the adjusted revolution count over a period of time;
• comparing the aggregated adjusted revolution count to a threshold in order to determine remaining oil life.