I think I may have a coolant leak but I can't figure out where! Currently I have @ 15 hrs on the top end of an 01' CR 250 which was pressure tested at the time. I've topped off the radiator twice now since the top end, begining to think maybe there's a leak somewhere but havn't found any signs externally. Visually checked all hoses, connections, radiators, weep holes at front of motor and under water pump, even drained the tranny fluid but don't find any sign of a leak. I suppose it's possible it could be leaking into the combustion chamber? If so what affect would that have on the motor? It seems to be running fine.