More than likely the heater core is leaking.
heater core
there is no water mixed with the oil but have antifreeze coming out of the exhaust
Most likely the heater core is leaking. Has to be replaced.
You probably have a leaking heater core.
The smoke is actually antifreeze mixed with air. The most common cause of this is a leaky heater core.
look for antifreeze coming out of the radiator as the engine warms up after a cold start.
Once your vehicle is warmed up, if you have antifreeze coming out of the overflow you have too much in your radiator.
If antifreeze is filtering through your ac vents, other toxins could also be coming through. Don't take chances; see a mechanic.
Sounds like a freeze plug corroded or blew out; at worst, it might be a cracked block.
Replace the thermostat gasket.
Pretty much has to be a blown head gasket.
Leaking heater core