"Ethyl"? The youngsters wouldn't get it. But they can Google "Ethyl gasoline". GM and Standard Oil of New Jersey formed the Ethyl Gasoline Corporation to market tetraethyllead (it reads easier as tetra ethyl lead,or TEL), which they had DuPont manufacture.
I remember, "Fill it up with Ethyl." Then, with the advent of catalytic converters, the newer cars came with a narrower gas filler opening, so that leaded gasoline could not be used, which would destroy the effectiveness of the catalytic converter. But there was a market for small funnels, for pouring the cheaper leaded gas into the newer cars.
Later, the hit fit the shan, as the gummint got wise to the lead pollution and completely banned leaded gasoline.