With regards to draining my caravan. I've just opened all the drain taps both under kitchen (2015 320) and at the very back where we have the electrical barrel type heater + opened up the taps. some water has run out but i know from previously that its difficult to get it all out. I drove down the rd one year & with all the jostling more water ran out. I might try blowing into the taps to help the dregs out of the pipes, just wondered if anyone else had perfected it.

Yeah i had meant to drive with bungs & taps open after my last holiday but weather & family problems meant we didn't get away hence me rushing out this morning to drain things.

Interesting read