At any The oil in your engine serves to lubricate moving parts, and perform up to 40% of engine cooling. It also prevents corrosion and serves to clean the engine, suspending undesirable deposits until they reach the oil filter to be strained. There is a lot of discussion on when to change the oil and it varies from 3,000 to 5,000 to 10,000 miles. It is really best to follow the car manufacturer’s recommendation and whether synthetic oil is being used. The peace of mind of an engine that will run and not give up the ghost is reason enough. Oil is the blood of a vehicle’s heart that lubricates its engine and keeps it going down the road. Clean oil on a scheduled basis will extend the life of the car considerably, and it is worth the trip to the local auto repair shop to get it done properly.