Usually a leaking hose into or out of the water pump (depending on its location), or the water pump gasket.
Look at the oil on the dipstick. If you have antifreeze leaking into the crankcase the oil will be milky.
you might have a blown head gasket and the coolant is leaking into the cylender and the engine is burning it.
antifreeze is more likely to be leaking from the water pump and running down where it appears to leaking from crank pulley
antifreeze does not enter the engine at any time. locate and follow your radiator hoses and follow then and check for cracks or punctures.
if it leaks on left side of engine at hose,could be a bad water pump! on 3.1 engine. if pump is bad it will leak out of releif hole on bottom of pump!
is coolant leaking from engine?or is it leaking from water pump and running down engine and appears to leak from engine
Possible leaking hoses or water pump
Either one of the heater hoses are leaking or you have a freeze plug on the side of the engine leaking.
it is probably your freeze plugs
look on the ground and follow it straight up to the engine
Most of the time it is because the water pump is going out and it is leaking where the pulley is on the engine.
Your car shouldn't "burn" antifreeze. If it actually is "burning" antifreeze then chances are you have a blown/leaking head gasket or possibly a cracked engine block which allows antifreeze to enter the combustion chambers. If your antifreeze is just disappearing then it is probably leaking out from somewhere. Possible leak areas to check out would be the radiator hoses, heater hoses, radiator, water pump, and the heater core. Most of the time if the heater core is leaking you'll be able to smell the antifreeze inside the car while the engine is running and the heater is on.