The car is 3 years old, 32,600 miles on it. Saturday morning (Memorial Day Weekend), there was a sizable puddle of coolant under the front of the car. I put it on the lift but could not see where the coolant was coming from. Refilled the recovery tank, started and let it idle for about 20 minutes. It got up the operating temperature, fan cycled but no leaks. Drove it to the shop Wednesday evening, about 12 miles, got out of the car and the best description I can give it is it was puking coolant all over the place. The mechanics worked on it for two days.... they could not duplicate the problem. They pressure tested the system, drove it all over the place, inspected all the hoses, etc. but could not get it to upchuck again. I told them to go ahead and replace the thermostat and the cap in hopes we can solve the "problem". Drove it home Friday night and it didn't "puke" again, thank God. It never has indicated an overheating problem thru all of this. Is there some sort of service bulletin/voodoo curse about a cooling system problem with V-6 Mustangs? Thanks.