Hi, Checked it again today and still loss of coolant from the header tank! i havnt driven her or turned her over for a week now since i discovered my shredded cambelt. however i will be getting that done this thursday but hopefully i will find out where that blasted coolant is going when the mechanic gets the rad & belt stripped down. still no visual signs of leakidge from the rad or water pump, so my other thought was that maybe there is a hairline crack in the header tank, as there is no loss of rad coolant?. ... i havnt managed to check the pipe feeding to the head from the water pump but i will hopefully get round to that tonight, looking through the heat shield though that pipe looks rather new and rust free, so i wouldnt of thought it was seeping from there, although i could be wrong. my mechanic told me that maybe there is a slight leak but it may only become big enough for the coolant to pass out when the engine is at runnin tempreture and when the pipe heats up and expands. maybe hes right?