National Geographic : 1932 Dec
(^CONTROLS &eGIANT POWER of Gasoline UST AS the strength of the ele phant must be controlled to be of service, so gasoline needs a trainer to deliver its power smoothly. Regular gasoline goes "wild" inside the engine. It explodes unevenly, vio lently-causing harmful knock, over heating and loss of power. Leading oil companies add Ethyl fluid to good gas oline to prevent this. It controls com bustion-turns more of the gasoline's energy into power--so that less takes the form of harmful heat. The high compression motors, now offered by nearly every car manufac turer as either standard or optional equipment, require Ethyl Gasoline. 0o4 Older cars thank you even more for its sCo greater power. S= Stop at the Ethyl pump today and get the full value--the best perform Ethytlp uid connis,lad ance of the car you own. Ethyl Gaso line Corporation, New York City. 0Z.G.C.1932 Bay ETHYL GASOLINE PRESS OF JUDD & DETWEILER. INC. WASHINGTON. D. C.