Fuel Prices

[Fazerider]

I've heard that theory of fuel being denser when cool, not convinced it's a good thing though (assuming of course it works) - there's always that thought that if you've brimmed the tank, and it expands, it has to go somewhere (ie, you might find it leaks from vent pipes etc)...

I can confirm that theory. :'(  Filled the car early one morning and left it parked on the drive in full sun, a few hours later came out to discover fuel squirting out around the filler cap. These days I only brim it if I'm going to be driving at least a dozen miles immediately.
Probably not a problem on the bike, that filler tube at the top of the tank stops you over-filling unless you're patient enough to keep dribbling the stuff in until the pinhole in the side is drowned.