An oil management system to reduce and remove the amount of soot, rust or other contaminating particles in oil used in an engine, the oil management system comprising an oil filter assembly including a filter element and an additive cartridge, the additive cartridge configured to provide a means for continuously dispersing a small quantity of additive into the oil; an oxidation prevention means to prevent or diminish oxidation of metal in the oil management system; and an oil condition monitoring sensor to measure various aspects of the oil in the oil management system.