Can't ride much at present and winter (well we call it that) is on the horizon so might just take down and lay up the bike and play with exhaust, rust etc.

I used to drain then put kero in engines to over-winter them but have been told it isn't a good idea. I left my 4-stroke water pump just drained and as clean as possible but the sludge dissolved parts of the carburettor, needing a replacement, actually ate into the metal in places. So, I sometimes use fuel additives such as Stabil in fuel for chainsaws and petrol tools and that seems OK but it is quite expensive.

What do you folk who live in places with real winters do? I am tempted to go back to using kero as it worked before, you just put a litre in the tank and turn the crank, ignition off, every now and again.