No Stupid Questions

Huh yeah You made me interested enough to click on the Wikipedia article, and such drama behind it too apparently:

The term gasoline originated from the trademark terms Cazeline and Gazeline, which were stylized spellings and pronunciations of Cassell, the surname of British businessman John Cassell, who, on 27 November 1862, placed the following fuel-oil advertisement in The Times of London:

The Patent Cazeline Oil [...]

That 19th-century advert is the earliest occurrence of Cassell's trademark word, Cazelline, to identify automobile fuel. In the course of business, he learned that the Dublin shopkeeper Samuel Boyd was selling a counterfeit version of the fuel cazeline, and, in writing, Cassell asked Boyd to cease and desist selling fuel using his trademark. Boyd did not reply, and Cassell changed the spelling of the trademark name of his fuel cazelline by changing the initial letter C to the letter G, thus coining the word gazeline.

By 1863, North American English usage had re-spelled the word gazeline into the word gasolene, by 1864, the gasoline spelling was the common usage. In place of the word gasoline, most Commonwealth countries (except Canada), use the term "petrol", and North Americans more often use "gas" in common parlance, hence the prevalence of the usage "gas bar" or "gas station" in Canada and the United States.

Coined from Medieval Latin, the word petroleum (L. petra, rock + oleum, oil) initially denoted types of mineral oil derived from rocks and stones. In Britain, Petrol was a refined mineral oil product marketed as a solvent from the 1870s by the British wholesaler Carless Refining and Marketing Ltd.

When Petrol found a later use as a motor fuel, Frederick Simms, an associate of Gottlieb Daimler, suggested to John Leonard, owner of Carless, that they trademark the word and uppercase spelling Petrol.

The trademark application was refused because petrol had already become an established general term for motor fuel. Due to the firm's age, Carless retained the legal rights to the term and to the uppercase spelling of "Petrol" as the name of a petrochemical product.