Hello , have an XC 70 AWD D5: the following problems exist there…who has ideas where to start my search: 1) were traveling 2007 and 2008 with caravans in Croatia, on every longer mountain he became regularly too warm, so up to 3/4 of the display, on normal track he then went back quickly to the normal area over , or with the help of the heating inactivation it was under control… ..but only with caravan, otherwise never occurred 2) now for about 6 months he consumes water, a uf 1000km so far 1 liter – water is nothing in the oil – despite the pressure at the dealer to detect no exit up to 3 bar – machine runs flawlessly, no jerking or the like, according to. dealer can not get water into the combustion room, would immediately jerk etc. the machine would be oversensitive So big question where is the water ???? Has DA JEMAND IDEEN, or could it be the head gasket … could it burn through the heater, there must also a heat exchanger sitting, could that be ??? About help I would be grateful