1990 v12 5.3 l.
and yes I bought a new radiator cap 16 lbs . Actually bought 2 and will switch them to see if the new one is faulty… Anyhow, after driving the car, parking and turning it off, I hear the Aux fan coming on . When it shuts off after 4 to 5 min. a cup full of radiator fluid drips down from cap /filler neck. I thought any extra fluids goes to atmospheric tank behind Left wheel and then goes back when car is cold. What could the cause be ? Did I overfill the radiator system / Gina