Love this thread, everyone here has good info and is funny to boot!

I've been to the U.K. recently, and for what you guys pay for gas...oops petrol... it is almost cheaper to fly glow! At first glance the prices look comparable, then you notice it is not a per gallon price, but a per liter price...Ouch. (I had expected imperial gallons instead of U.S. gallons, not metric at the pump)

By the way, mineral oil is a byproduct of the distilling process of gasoline from crude oil.