Can anyone help me? I have been losing coolant in my radiator for about 2 months now. I have to refill it every 2 or 3 weeks, but I can't find a leak anywhere, and the oil seems to be free of water or coolant. Any ideas. I am scheduled to take it in on Friday, but I would like to know what I am looking at before I get in there.

 

You haven't found any visable external leaks, and there is no evidence of coolant finding it's way into the oil. Ok, apparently you have a steam engine now. What might be the problem is a head gasket, head, or intake manifold might be slightly cracked or eroded next to a place where the coolant can find it's way directly into a cylinder. If it's a minor enough leak, which your's sounds like it is, the engine will burn the coolant right along with the air/fuel mixture and not cause any runability problems, for example: white steam in exhaust, overheating, engine misfire. Check for bad head gasket, cracked/warped head, cracked/warped intake manifold, or God forbid, cracked engine block. Most likely, in my opinion, minutely cracked head gasket next to cylinder is the problem.

 

sounds like my trucks symptoms. so can you replace the head with out taking out the engine? how hard of a replacement is it? should i just take it to a shop?