Went out today to look at a '70 MACH 1,about a 30 mile round trip, air temp in the 70's.After I got home, I went back outside after about an hour and saw a small puddle under my overflow tank.All the way out and all the way back the water temp was 200 at full temp.I have new rad., new thermastat, new hoses and Tefba filter.Drove the same distance or more last weekend and did not notice any dripping from tank.My guestion is, should the rad. be pushing fluid into the overflow tank at this temp.?If not what the hell is going on. :shrug: P.S. the Mach 1 was not there.