If we could have our cars run as long or as well as a watch or clock, we would be very lucky.  At 100km per hour we travel far enough towarrant an oil change every 2.5 days if you changed the oil every 6000 km. Many of us receive a good many years of trouble free operation from our time pieces and never think twice about how much longer they might run with a proper and regular oil change.  Or how much damage would be prevented by having the oil changed properly every three to five years, or 25,000 to 90,000 hours of operation.

mechanically clean pocket watch