Fall arrives next month. Along with it comes relief from the heat, and usually at the gasoline pump as well.
It isn’t simply that demand for gasoline drops after summer driving season. Gasoline is also cheaper to produce after summer, for reasons I explain below.
There are many different recipes that can be used to make gasoline, but the final product has to meet certain specifications. One of those is related to how quickly the gasoline evaporates, and that is influenced by the composition and the ambient temperature.
