I have an Mercury 115 1994-95 it is leaking water from the place the thermpostate is, other owner told me it was becouse water here in the north is so cold. He did connect an rubber hose so the water not got on the spark plugs. he also told that it only leaks when engine was cold, but the engine will never get warm, after 1 hour drive water in the engine is cold. hmmmm i think he did lie to me must be an other prob. i will try to get new thermostate hope this will fix the problem... Any sugestions pleace help me 