OK guys do you do your own oil changes, and how often? Personally I take it to the shop and let them do it, but last time I was their well they forgot the put back in the drain plug. I change it every 3,000 miles. So wondering how pita job is it to do on your own. I have probably average mechanical abilities. Since I have a higher milage car do you think that going synthetic would be better? Wanna kill these ads? We can help!