Hi I've just got around to looking at the water tank and filling of it. Now as I have never had to do this before I am looking for some advice. This is what I have
I can get some tank cleaning liquid to make sure it's ok but not sure that that is the best way to fill it with a hose attachment.
1980 Super viking with a 1.9 Polo Diesel conversion
I always have a full tank - there is no guarantee that there is potable water if you're stopping somewhere without water supply. As I never use campsites this is usually the case for me.
I always fill before leaving (from a reliable source). The added weight would be pretty negligible on fuel consumption. Plus, the last thing you want to be doing when you arrive at a campsite is start fannying around filling your water tank.