I have a 95 4-Runner that is leaking water somewhere. My mechanic cannot find where it is going. I recently had to repalce the radiator and might of put too much pressure on the head gaskets but they are not showing any signs of leaking. The only symptom is the loss of water in my radiator. I replaced the engine in 2006 with a new factory one and everything was working great. Does anyone have any clue what to do about my missing water??