National Geographic : 1928 Mar
Whatever your driving conditions -climate-weather -temperature-altitude your car will run best on ETHYL GASOLINE There is nothing mysterious about Ethyl Gasoline. It is selected motor gasoline containing "ETHYL" fluid, the compound devel oped by General Motors Research to take advantage of the higher compression created by carbon or by advanced engine design. So effective is "ETHYL" fluid-a patented compound contain ing tetraethyl lead-that less than a teaspoonful to a gallon of gaso line gives you car performance you have never known before. You get more power on hills and heavy roads, quicker acceler ation, reduced gear-shifting and a cooler engine-and as for high compression engines, Ethyl Gasoline made them possible! More than 1,000,000 car owners are now riding with "ETHYL." And its price is merely the price of good gasoline plus the few extra pennies that the "ETHYL" ingredient costs. ETHYL GASOLINE CORPORATION . 25 Broadway, New York City ETHYL GASOLINE IS THE YARDSTICK BY WHICH OTHER GASOLINES ARE MEASURED.