My car is an extremely bad example of maintence and service intervals. I change the oil too regularly, and I have yet to do a tune up yet. I need to replace the brakes, but since I have a front suspension problem and I haven't been driving it and I have kinda "put that on the back burner" so to speak. When I drove it I would change the oil biweekly. Yes i'm crazy but I felt that it needed to be done. I had a slight oil leak do to a accidental air born experience, and I check the oil regularly. If the oil looked bad I would change the oil. I didn't always change the filter ( a filter everyother week would have been too much) but the car has well over 160k on the odometer and thatwas before it stopped working. So I figured the extra precaution wasn't a bad thing, but I am a very bad example nonetheless.