Bongo Fury

Does anyone know is it a standard size on the bongo or another one of the grossly overpriced "bongo" items.

Ian sells them in the shop, although I expect it's a standard Mazda/Ford fitting which you could source locally.

Back when I first got my van, I ordered one from here, not the same as the one pictured but same item number (http://www.ebay.co.uk/itm/280361388538). Perfect fit and I've had no problems with it. Mine feels a bit cheap though.

I am toying with replacing my fuel cap - or should I just put a sign on it saying

'Before you siphon this please note this tank contains 30% pure rapeseed oil - are you positive you still want it?'