National Geographic : 1932 Oct
aM1 Gasoline EHAVE WATCH the lion tamer enter the cage. Your own eyes prove his mastery over the king of beasts. Seeing is believing. And now, for the first time, you can see the difference Ethyl makes in gasoline. You can see how it tames and Through a quartz window in controls the burning of gasoline inside the the cylnder head, engineers took 7. harmful knock, photogerahed nee stefl engine-see why it prevents harmful knock, hotographe of combustion. Above: 'he uneven wasteful overheating and power-waste. explosion of ordinary gasoline. Look at the pictures at the right. They are the first photographs ever made of com bustion inside a running engine; taken in less than 1/100th of a second! You now see the difference you feel when you drive your car with Ethyl Gasoline. The Ethyl emblem on a pump is your as- Ethyl Gasoline in the same en surance of value for your gasoline bills. Its geote stre do powerning, ti quality is maintained on every count by controls combstion; brings out laboratory inspection of samples collected of any daily in all parts of the country. Ethyl Gas- GOOD oline Corporation, New York City. 'ol C;o 0 s GO0 =EL Ethyl fluidcontainslead SE HYL GA . G.C . 93 By ETHYL GASOLINE PRESS OF JUDD & DETWEILER. INC. WASHINGTON. D. C.