My brother, who studies boring Chemistry books, says that it is a hydrocarbon. I like the way petrol smells. Like dirty armpits mixed with some cologne. Actually it doesn't smell exactly like it. I was just trying a way of saying it to simplify its smell.
Simplification is very complicated.
Anyway, now about my uncle's bike. After the bike is able to carry out the ignition, the kerosene from the other compartment takes over and then it is almost smooth sailing. Only that it makes a hell lot of noise. Like my grandfather coughing without any interruption. She loves loud things.