My 2006 3.0 has 43,000 miles, and I have started noticing a distinct smell when I get out of the car after driving. Can't quite place what it is, but suspect it may be antifreeze. Water temp is fine but the radiator looked a little low yesterday. Nothing is leaking onto the ground, and oil looks okay. I am concerned that this may be a head gasket or something. Any similar issues out there. I'm going to take it to the dealer this week.