Thanks for the replies. The second to last oil change they must of not installed the cover/ o-ring propely. On the last oil change they did a Goodwrench multi-point inspection like always and there was a note (Engine oil leak) So I took it in the next day and they replaced rocker cover gasket, but that wasn't the fix. Took it back in yesterday and they replaced the filter cover. I hope its fixed. I don't know what tool they are useing but they really rounded the nut on the new cover. I might change the oil my self next time to see whats going on. I need a 32mm socket?
2006 Chevy Cobalt LS Orange