Seals are gone or the drain tubes, if fitted, are blocked, ruptured or disconnected
Possilby the return line is rusted on the top of your tank and the fact that the system is pressurized while running, it will "bleed" off this fuel as a leak while park. Oh, and if this is the case...it is also leaking while you drive.
205.00 at the dealership
Be careful - some of these products can plug the heater core
coolant leak from wire harness
for Jettas and Golfs particularly 1992 and older the water comes through the doors. The vapor barriers deteriorate and will need replaced with much care taken to ensure a perfect seal.
Most probably an air leak.
I had a similar problem with my Passat. The back seat floorboard was soaked. Found out that the seal on the Moon Roof was not functioning properly and the water leaked down through the door on the floorboard. Volkswagen fixed it immediately. They told me it was a common problem. Good luck.
When a water pump is bad it will leak. There is a hole in the pump were water will leak out of.
Because there is a leak in the pipe of the water main.
I remember the push rod tubes being a source of an oil leak.
It could be the crack (coolant) pipe, or thermostat housing leak. Have something that knows about the engine look for signs of coolant leak. Unless your oil is foaming, then it sounds like a head gasket leak.
Yes, the water pump can leak if you do a coolant flush.