HI everyone boiled up tonight on way home went into red, stoped sraight the undid header tank lot of pressure and boiling rang rac they said up to three hours. So let it cool down then started the engine with cap of and filled with water took about one litre put cap back on then got home. the guy from rac rang told him what happened and that i was nearly home. he said feel rad when u get back if its cold he said thermosat could be sticking witch it was cold. any had this problem buy the way rad was cold all over?