My 1998 rm125 goes through radiator fluid in an hour. I can only find a very slow leak at the screw but where could all of it go. I think it's low cause I can't see it in the radiator. The only thing is that my tranny oil comes out grey after not even riding that much. But when I took off the whole cover there was no noticeable leak in there. Where else could it leak from or to.