Oil cooler engine oil cooler is cracked and oil leaked into the radiator

if it is pink or tan colored yes
replace the radiator and have the engine and heater system professionally flushed

if you are referring to the oil cooler for an automatic transmission, then it will mostly be in the radiator bottom/side tank and uses coolant to cool the oil. They have a habit of cracking/leaking and putting red oil in the radiator or allowing coolant into the transmission. The fix for this is costly flushing of the engine system and transmission and a new radiator. I would consider an air cooled oil cooler as they are more efficient and not prone to coolant problems.. They are generally cheaper than a radiator as the inlet/out let pipes can be blocked off

Hi
you didn't say what the car is or any other information.
I can tell you generally, oil in radiator means: engine oil cooler, transmission oil cooler, cracked engine head or cracked engine block. about the heating problem, the heater matrix is blocked with oil, the coolant in not going trough. you need to flash the cooling system including the heater matrix.
good luck

i had the same problem and it was a cracked oil cooler and all i done was by pass the oil cooler take one hose off the lower radiator hose and the hose take off the oil cooler and the one off the oil cooler put it back on th lower radiator hose and the one that u took off the lower radiator put it back on the oil cooleer

see this causes and remedies, you can have overheating by internal leak or external leak:
1) transmission oil cooler is leaking , 2) loose cylinder head gasket 3) engine block cracke 4) cracked cylinder head or engine block bore 50 oirl cooler is (inside radiator) is cracker.

2) external: a) leak at the hose connection b) water pump c) core plugsd) thermostat housing e) cilynder head.f) gasket cylinder head.

God bless you

some cars crack heads like saturn s series the satun v-6 blows out oil coolers as well as saab v-6 some cars have the intake gaskets leak if it has a oil cooler in the raid it could fail as well don't know what your working on if the oil looks pink check the trans fluid the trans coolers fail as well

If you have a engine oil cooler then yes thats the problem,the only oil cooler you have is the transmission cooler which goes into the radiator.and the transmission fluid would be full of water,you will need a headgasket

sounds like a cracked cooler. Is the coolant leaking out too? there may be a independant oil cooler that was infront of the rad, and is now damaged. Shampoo the engine compartment with a good degreaser, and run the motor for ten minutes if it will drive without overheating, find the source of the leak, some residue oil may still be left, so check well.

Here is the way to find out pull your spark plug put out and bring each cylinder tdc and put 50 psi air in that cylinder remove radiator cap and check for bubbles do this to all cylinders,if no bubbles I would be checking to see if that engine has a oil cooler that could leak oil into your coolant,some mercededs had oil cooler,

Maybe oil cooler line in radiator leaking