I can't say for sure but seems like after my last oil change/tire rotation at the local dealer one of my tire has developed a slow leak. Last couple of weeks I have to fill it up to 35PSI on monday, and by the next monday it's back down to 29PSI. Anything I can check or do to alleviate this. I got 35K on the stock tires and will probably be changing them out in the next few months so don't really want to buy one new one right now. Seems like I heard fix-a-flat isn't good ideal to use. Thanks for any advice.