How Often Do I Need to Change My Oil?
If you use the car only for short trips on city streets, particularly in cold weather, you probably should have the oil changed every three months. Why? On short trip, the engine doesn't reach its proper operating temperature, which can cause condensation of water inside the crankcase and oil can be diluted by gasoline. If you mostly use your car for occasional longer trips, it is acceptable to wait six months or more to change the oil.