@ Sniegy. The tank is a rigid Poly and is pretty robust. I can't be sure who makes them, but Rich in another thread found them and provided these links. It is the same tank that gghaggis has a pair of in the back of his RRS.
Poly Fuel Tank 55Lt Univ Fit - Dolium Pty Ltd
or
BOAB Solutions — 55lt Universal Fuel Tank
There are no baffles, but it is pretty straight forward to keep the tank full or empty. I have not had any experience with a half full tank. It just seems sensible not to have fuel "sloshing about"
@ Redback. I was concerned at first about weeping fuel. But there has been none at all. I have raised the breather on a flexible pipe and it is capped by a porous stone which is supplied with the tank. The breather hose can be seen in the first picture). It doesn't even attract dust. I have a bolt that fits snuggly in the end of the drainage hose to keep the dust out of the hose when it is not in use. No joins or seams have any sign of weeping.
I might add; To fill the tank I just let the console operator know what I'm up to and then stand on the open lower tailgate to fill the tank direct from the bowser. I ensure the tank is earthed and diesel is safer than petrol so no-one has ever been concerned when I fill up. This method is a lot better than dealing with jerry cans.
