most likely a blown head gasket.
cracked head or bad gasket
antifreeze leaking into the oil pan
A leak somewhere, possibly cracked head or head gasket.
HEadgasket failure, internal oil cooler leak.
your heater core has got a leak and needs to be replaced
No. they're dissolved in each other and are quite hard to seperate.
There SHOULD only be oil inside the valve covers. If they leak coolant you have a serious problem.
Because it 's leaking- OIL, ANTIFREEZE, or vacume leak
There may be a hole in the radiator?
maybe your head gasket