sorry dont know what to call the thread. a dealership changed my oil and reset the service interval for 3k miles, while with synthetic oil it should go at least 7k. Is there a diagnostic thing I can buy that will allow me to reset the oil change frequency? and I guess while Im at it, can deliver the codes that tell me if there is a problem or not? I am not really interested at this point of reprogramming things, just want to check trouble codes and reset the oil thing and and I dont want to spend a fortune doing it. (grin)