MO210 Motorad Oil Cap v423423-v423424-v423425-v415985-v415984-v415983-v415982-v412773-v412772-v412771-v412770-v411686-v411685-v411684-v411683-v411682-v402066-v402065-v402064-v402063-v393495-v393494-v393493-v393492-v393491 1985 Mercury Grand Marquis 1978

1985 Mercury Grand Marquis 1978

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MO210 Motorad Oil Cap v423423-v423424-v423425-v415985-v415984-v415983-v415982-v412773-v412772-v412771-v412770-v411686-v411685-v411684-v411683-v411682-v402066-v402065-v402064-v402063-v393495-v393494-v393493-v393492-v393491 1985 Mercury Grand Marquis 1978The primary function of an oil cap is to seal the oil reservoir Oil caps can include filters for crankcase venting that should be changed several times in the life of the vehicle MotoRad Oil Caps provide proper fit to ensure proper sealing and to prevent unnecessary oil loss A missing or defective oil cap can cause a loss of oil leading to engine damage Specifically designed pressure and vacuum relief valves to prevent evaporation of fuel.