A leaking head gasket is is most likely cause, could also be cracked head or cracked block. A leak in the trans cooler which is located in the radiator would allow trans fluid into cooling system.
The coolant has oil in it. Possible causes are a failed headgasket, or a leaking oil cooler,
Yes it can. check the oil dip stick. if coolant is leaking inside the engine the oil will be "milky" in color.
Coolant mixing with the oil from a blown head gasket.
this is usually engine coolant leaking in
if there is oil in the coolant system it could be a crack in the intake, a ruined intake gasket, a cracked cylinder head
It usually means you have coolant in your oil. Cracked block or bad gasket?
Could be, Restricted air flow through outside of radiator, Restricted coolant flow through inside of radiator, Faulty fan clutch, Missing or broken radiator fan shroud, Faulty thermostat, Low on coolant,
Blown head gasket, cracked/warped head, or both.
Blown head gasket or cracked head.
Heat, lack of lubrication, or coolant in the cylinders or oil pan.
There are a couple of things that can cause oil to get into your coolant reservoir. A blown head gasket or a broken piston ring are the most common causes.
This is most likely a severe failure somewhere internally in the engine that resulted in coolant in the oil. different root causes are probable. oil should be checked regulary (do a oil sampling) after it has been replaced.