Hi Guys,   Just bought a 110 HDI exclusive 2nd hand.  Have a smiliar problem I think. Although my milage seems to be a lot better than those quoted. Just drove Wolverhampton to Plymouth approx 210 miles low coolant level only came on when i arrived at Plymouth. No loss of power at any time and no white or grey clouds of smoke out of the exhaust? no over heating either   seems a bit strange to have a warped head but no obvious problems apart from coolant loss? Mind you i am no automotive expert   Regards   SHREK