i fill the radiator can with coolant to the proper line. next time i check ( about once a week) it's half gone. so i fill it up again. Then it takes half again. where in the hell does it go. There are no leaks. all new radiator hoses, and newer radiator. No coolant in the oil. where is it going? and it is running at 190.

 

check the overfill for a leak?

 

I'm going through the same thing right now, from all the info. i've gathered it appears to be a blown head gasket, try pulling the plugs and see if any of them are exceptionally clean, if so it could indicate a blown head gasket. check out my recent post in the "general engine" section, look for "loosing coolant".

 

i just had my plugs changed. and the guy that changed them said that my plugs looked fine.

 

Check the O2 sensor. If it was leaking coolant into the cylinders, it would leave white/green deposits on it. Happened on mine.

 

i saw no leaks on my car..

but after a while i found out it was leaking from one of the heater core lines and burning off on the manifold and i couldnt really tell. after i tighten down that, my water pump was leaking through the weep hole, took a while to find that leak. so i replaced the pump after that a few weeks later i was still losing coolant finally i found that leak is was slowly coming out of the sides of the radiator so i bought a new one.. and now i am not missing anymore coolant.

 

i have already replaced my radiator and my water pump. my radiator one month ago, and my water pump in aug.