Hi folks is this how you introduce yourself I am a new computer user and just learning the ropes.I have a 2004 TDI 4.2 The best

I have a question I was distracted this afternoon and by mistake pumped 8lts of petrol in the reserve tank of my diesal which was empty ,Does any one know how to drain the reserve tank, does it have to be removed or has it a drain plug at bottom of tank?
Any help would be appreciated
Thanks in advance