HEadgasket failure, internal oil cooler leak.
Antifreeze in the oil of any engine means there is a crack in the head gasket, or worse, in the block.
A head gasket is leaking or the Head is cracked.
A bad head gasket is the most common cause of antifreeze mixing in the oil. The antifreeze will dilute the oil and it will eventually cause your engine to seize up.
Look at the oil on the dipstick. If you have antifreeze leaking into the crankcase the oil will be milky.
the engine is burning oil. blue smoke oil white smoke antifreeze black smoke excess fuel
Intake gaskets have failed.
A bad head gasket can do that or an engine oil cooler gone bad in the radiator. The year, make and model info would help.
That means that there is engine coolant / antifreeze leaking into the engine and mixing with the engine oil. You must have an 1997---2000 modal V-8 or V-6 engine. It is very common for the intake gasket to leak coolant into the engine oil on those engines. Are you sure it did not freeze and crack the engine block ?? If you know that it had enough antifreeze in it not to freeze, Then you may get lucky and flush the engine oil and replace the oil filter several times AFTER you replace the intake gasket. OIL and ANTIFREEZE don't mix well and the antifreeze will destroy the engine BEARINGS.
NO!!!! do not do this, oil is oil, transmission fluid is transmission fluid, and antifreeze is antifreeze, do not mix any of these, it can perminately damage your engine.
vehicle will overheat. just dump the oil and antifreeze , flush engine and refill with clean oil
antifreeze....
No. Antifreeze should not mix with engine oil in any vehicle.