Unimog Club UK

no never driven one. it also needs tyres if anyone has any views  on whats best and insurance who to go too  and the most important question can i keep it as a tractor i know this is a gray area i do work on a farm well in an old barn on a farm and will be keeping it there but can it go to off road days out to the pub? home for working on and if it has two fuel tanks run on red off road white on road and how  do you stop red fuel getting into the white