A FYI . I have 06 Chrysler 300C that just had the rear axle seal replaced . Upon having the oil change just before passing the 36000 mile warranty . The mechanic told it needed to be replaced before warranty expired ( less than 50 miles ) . I asked if that was something I could expect on the Challenger as it shares part's from the 300 and Charger. They said they thought it had been revised as they had seen this problem on several 300's. So if you have a 300 . Check it out . Ours was low on fluid in the rear end .