It is recommended that you get an Oil Change on your vehicle every 3,500 miles for regular oil and every 5,000 miles for synthetic oil. Checking and changing the oil is essential to keep today's engines working properly and efficiently. Check the oil level with the engine and the car parked on a flat surface. Open the hood, remove the dipstick, wipe off with a cloth towel or paper, then back into the oil tank. Pull it again and see if the level is within the acceptable range marked on the dipstick. If you add the oil yourself, do not over fill. Over filling can damage the engine.
Most automobile manufacturers recommend oil changes once every year or every 7,500 miles of car and light truck gasoline engines. Diesel engines and turbocharged gasoline engines, the usual recommendation is every 3,000 miles or six months.
You’ll find that a once a year (7,500 mile) oil change is for vehicles driven in ideal circumstances. What most of us think is "normal" driving is actually "severe service" driving. This includes frequent short trips (less than 10 miles, especially in cold weather), stop-and-go city traffic driving, driving in dusty conditions (gravel roads, etc), and sustained highway driving speed during the warm season. For this type of driving behavior, the recommendation is to change the oil every 3,000 miles or six months.
For maximum protection, most oil companies say to change the oil every 3,000 miles or three to six months regardless of what type of driving you do. Regular oil changes for preventative maintenance are cheap insurance against engine wear, and will always save you money in the long run if you keep a car for more than three or four years. It's very uncommon to see an engine that has been well maintained with regular oil changes develop major bearing, ring, cam or valve problems under 100,000 miles.