Engine? 3.1L V6 are notorious for intake manifold gasket leaks. get it fixed soon or your engine is at risk. My Lumina had oil in coolant and coolant in oil. If there is tan foamy stuff on oil fill cap, coolant is in oil too.
If starting from empty pull the top radiator hose off the engine and fill the radiator until coolant starts to flow from the engine hose bib. replace and tighten hose. Fill the overflow tank with coolant. Locate the vent on the coolant hose bib (brass fitting), start the engine and allow coolant flow to purge the air from the system. When coolant flows steadily close the vent. Re-top up the overflow tank.
Coolant is old.
The system was overfilled and purged the excess coolant.
It could be the coolant overflow tank that is leaking.
Generally via. the coolant reservoir holding tank in the engine compartment. Just look for the white plastic tank with the lid showing radiator info.
An overflow tank is a bottle that holds coolant that expands and leaves the radiator under driving conditions. The Coolant will go back into the radiator as needed.
red
in the overflow tank
It could be a couple of things. The coolant system could be over full. There could be a clog in the radiator. Or possibly the thermostat but not likely. also, the ford coolant tank is pressure sealed, if the cap to the tank has a defective seal, it WILL overflow when you stop your car, or whenever the pressure builds
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Its either in the coolant overflow tank or in the side of the radiator
The overflow tank is either cracked or its overheating and leaking from the cap