You have to loosen the drain valve, it is located at the passenger side rear corner of the radiator. There is a plastic fitting on it for putting a 3/8" hose for draining that somewhat hides seeing it very well.
On a 1994 Ford Aerostar : Follow the TOP radiator hose from the radiator It will connect to the engine cooling thermostat housing The thermostat is INSIDE the housing * on the 4.0L V6 engine the hose actually connects to a metal pipe which is part of the thermostat housing
On a 1994 Ford Aerostar : Follow the top radiator hose from the radiator : I know on the 4.0 liter , OHV , V6 engine , the top radiator hose connects to a metal pipe that is part of the engine cooling thermostat housing that is bolted to the front of the engine ( the thermostat is inside the housing )
Naturally on all radiators, the drain-valve is at the very bottom if you look under the actual radiator for a butterfly-like valve with a hole inside it for the water to come out.
For a 1994 Ford Aerostar , 3.0 ( and 4.0 ) 3 - 6 2 - 5 1 - 4 front of Ford Aerostar
Yes they are compatible
Get under the car and locate the drain valve or disconnect the lower water hose.
1994 Ford Aerostar Mini Van 1994 Ford Aerostar Mini Van
On a 1994 Ford Aerostar , 3.0 L ( and 4.0 L ) 3 - 6 2 - 5 1 - 4 front of Ford Aerostar
To drain the radiator on a 1999 Ford Expedition, place a bucket under the radiator. Unscrew the radiator drain hose or valve on the bottom of the radiator. Remove the radiator cap.
between radiator and the block next to intake
On a 1994 Ford Aerostar , 3.0 liter V6 and 4.0 liter V6 : 3 - 6 2 - 5 1 - 4 front of Ford Aerostar
It is on the front right lower side of the radiator. To find it go look in front of the right front tire toward the radiator, on the radiator you will see a little plastic looking plug; thats the radiator drain plug.