Ah ok well it never used water when it was on the road but it's been sat n not touched for 2 years so thought maybe it just evaporated if that's poss in a sealed system? I drained the water I put in and it did look pretty manky so stat maybe stuck, I'm not really fussed of its knackerd I just need to get it mot'd so I can move house and drive it to Nms without it blowing up