Damp, cool evening here in Floriduh . . . I notice when I turn the heater on the side and rear windows quickly fog up - turning on the defroster clears all. This is new, any ideas (stand on my head and look at the recirc spring, just like the 5000s?) Also, would a 1990 V8 use freon 12 or 134 in the air conditioner? Best Regards, Mike Arman