National Geographic : 1927 Jul
ETHYL GASOLINE knocks out that"knock'.. ..turns carbon intopower What Ethyl Gasoline will do in your own automobile 1 It will end all carbon trouble and make carbon formation an asset. As carbon forms, both temperature and compression (pressure) are increased. Ethyl Gasoline neutralizes the higher temperature and the increased com pression becomes increased power. 2 It will give you more power, parti cularly on hills and heavy roads. 3 It will make your engine operate more smoothly. 4 It will reduce gearshifting. 5 It will increase acceleration, mak ing your car easier to handle in traffic. 6 It will eliminate "knocking" under all driving conditions. 7 It will reduce vibration and engine wear and tear. 8 It will save the expense of carbon removal. 9 It will give you more power from each gallon of fuel that you use. IN SHORT, the advantages of Ethyl Gasoline over regular gasoline are so marked as to make the small premium it costs a real economy. IT is important that you differentiate between Ethyl Gasoline and other "anti-knock" gasolines. Ethyl Gasoline is the only fuel which eliminates "knocking" under all conditions, thereby making present day auto mobiles perform more efficiently. It was developed by General Motors Research Labora tories after 8 years of scientific research which resulted in these two important discoveries. 1 That"knocking"is aninherent characteristic of all gasolines. What had previously been called a "carbon knock" or "ignition knock" or "engine knock" is in reality a fuel knock, due to the too rapid combustion of gasoline in the cylinders. 2 That "knocking" could be completely eliminated in gasoline by the addition of Ethyl Brand of Anti-Knock Compound. This ingredient was discovered by General Motors research engineers after experimenting with more than 33,000 chemical compounds. O SUPERIOR is Ethyl Gasoline to other so-called "anti knock" fuels that it has been adopted wherever unusual performance by a gasoline engine is required. That is why the United States Navy uses Ethyl Gasoline in its latest types of airplanes. That is why Ethyl Gasoline is used by the racing car drivers who are setting up new records. Ethyl Gasoline is available throughout the United States and Canada through leading oil companies and responsible jobbers. It is sold at pumps which display the "ETHYL" trade mark shown at the left. ETHYL GASOLINE CORPORATION, 25 Broadway, N. Y.