Check to see if it is mixing with engine oil
Run engine to normal operating temperature and remove oil dipstick, let a drop fall on hot part of engine - oil will smoke coolant will "sizzle"
If so could be a sign of a bad head gasket
It's not going anywhere in a Type 1 Beetle because we never used antifreeze in aircooled engines.
In a New Beetle, it could be going one of three places. In ascending order of dread:
You could have a leak you don't know about. Do you smell antifreeze inside the car? Heater cores do spring leaks occasionally. (Changing one is an awful job. Hope it's not that.) Heater hoses leak. Little pinholes you can't even see will cause leaks you can't find.
You could have a bad head gasket.
Or you could have a cracked block.
you might have a blown head gasket and the coolant is leaking into the cylender and the engine is burning it.
Most of the time it is because the water pump is going out and it is leaking where the pulley is on the engine.
If losing anti freeze but not visible leaking typically means bad head gasket. Antifreeze is leaking into combustion cylinder and therefore evaporating and going out exhaust pipe as steam.
There is no antifreeze in a refrigerator.
Look at the oil on the dipstick. If you have antifreeze leaking into the crankcase the oil will be milky.
Antifreeze will be leaking in the floorboard on the passenger side, there will be a smell of antifreeze through the vents.
you got an antifreeze leak
its got a hole in it
If the hose is leaking, replace it.
out of the over flow
antifreeze leaking into the oil pan
your heater core is leaking