You’ve heard it forever…”change your oil regularly, at 3,000 mile intervals.” Granted, the formulations of conventional motor oil that are around today can let you bump that interval up to about 5,000 miles, but oil changes are still just as important as they ever were.
Your car’s engine is a precision machine, with many moving parts that run on extremely tight tolerances with each other. Motor oil provides the film of lubrication that allows those parts to operate smoothly, dissipating heat and reducing friction and wear. Without oil, the engine would quickly overheat to a point where the moving parts would actually weld to each other and seize the motor.
Along with the heat from friction, the e ...[more]