Hi folks, TD5 diso 2001 auto, keep having to top water up every 6 weeks by about a pint, 2 or three if done long run. Head gasket done 18 months ago (14000 miles ago) car has done 67k, no white smoke, no visible signs of leak, no change in temp gauge as so far have noticed fans on when i switch off and than find water overflow tank is blowin steam through its overflow pipe, any ideas? mate has Shogun (i know its not a landie) but he had same problem he changed water pump, is it pump is this easy to change yourself, is rad easy to change/clean as have read on hear mucky rads don`t help. Hope you can help.