well, the taurus is starting to on occasion lose coolant, thin it may be the head gasket on the rear bank. the engine has never been overheated. only seems to do it in city driving, i can leave it up on ramps idileing for a hour and it wont leak at all. dripss of the pssenger side corner onto the exhaust pipe, when it first did it i thought i had a electrical fire (white "smoke") it will also weep after being shut off. looks like its going to be about $130 in parts. im surprized that its doing it, i may wait until the leak gets worse just to be sure of it being a head gasket. ive never heard of a 3.0 doing this. the car only has 130,000 miles on it. obvisoly, i'll do both heads and put new valve seals on as well.