Had to read half the article before the word "gasoline" appears, indicating that the gas in the headline is vehicle fuel and not heating gas. After reading the whole thing, I'm still not 100% sure.
Seems to me no one can figure out what the proper name for this stuff ought to be :P
I got curious, and "Gasoline" apparently comes from "Gazoline", which Samuel Boyd used to avoid trademark infringement with Patent Cazeline Oil (for use in artificial light), which was named after John Cassell. [1]