It should: Reduce friction and wear between moving surfaces Remove heat caused by friction Provide a seal against escaping gases Keep the engine clean by holding carbon and sludge-forming material in suspension, so they will be removed by the oil filter or when the oil is changed Provide protection against rusting and attacks by acids.
(It; should Reduce; friction) (the oil; is changed; ) (they; will be removed; by the oil filter) (heat; caused; by friction)
It the oil they heat
should Reduce is changed will be removed caused
friction
by the oil filter
by friction