OK, to say I don't know my ass from a hole in the ground might be an understatement. I have a '92 R100GS. What do I use to clean out the tank? It is the metal kind, with the paint on the inside. The dealer told me to use fresh gas, let it dry, use more fresh gas, I presume swirling it around, then let it dry again. At this point, I am almost afraid to try anything my local dealer says. SO. what should I use, and what is the technique? Note: I am not currently having any problems that I am aware of, just doing some maintenance.