Arizona republican., 1919-09-28
FUEL NOW GREATEST
 PROBLEM IF OWNERS

With the tremendous increase in the consumption of gasoline and the con seuuent reduction in it's quality, the fuel problem is becoming of greater importance every day to the automobile owner" declared Cal Messner today.
 ITO understand the situation it is necessary to remember that the auto mobile motor is operated by heat, that it is the expansion of the hot gases in the combustion chamber that moves the piston. The problem then is to ex tract as many heat units as possible out of the fuel that is taken into the cylinder
 Tn the early days this was compara- lively easy as the gasoline supplied then was highly volatile and was easily va porized into an inflammable gas As the demand for gasoline increased. 1 however. the supply proved insufficient and had to be supplemented by the addition of the heavier oil products which were not so easily vaporized.
 "The result was exactly the same as though you tried to burn heavy lump coal in a furnace designed exclusively for nut In the automobile engine the heavier fuel refused to vaporiZe prop ertly Part of it was burned, part of it formed carbon and fouled the spark plugs while some leaked past the piston rings into the oil in the crank case de- stroying it's lubricating properties.
 "The outcome was burned out bear ings, fouled spark plugs, the formation of excessive carbon in the cylinder, hard starting, waste of fuel, low mile age, los of power, and knocking mo- | tor. To remedy these evils, engineers resorted to various methods of apply | +Iao za+ Of | the fuel, realizing that the low grade gasoline available would supply more heat units than high grade fuel, and | furnish more power if these heat units could be extracted.
 The result may be seen in the Essex, the wonderful performance of which during the past few months has aston ished the motor world Although it is only 291b inches overall, the Essex mo- tor develops more than 56 horsepower This remarkable achievement is made possible by it's scientific construction which permits the thorough atomiza- ton and burning of every drop of fuel supplied.
 The manifold carrying the carbu- retor is bolted directly to the cylinder block and the inward passages are give a downward slope from the car l Ouret0r through the waves. IeTleCl conditions for starting are assured since the raw gasoline flowing from 2 choked earburetor must prime every cylinder in the most effective way. The combination of gravity flow of tho mixture and the hot manifold insure: perfect distribution and complete com bustion of the fuel.
 Tn addition the shutters on the ra diator which are controlled from tht dash enable the driver to operate th' motor at the most efficient temperature which is clearly indicated by the mo tormeter on the radiator cap. In thu winter the louvre openings in the hooC are covered on the inside with a plat' doing away with the necessity for tht unsightly radiator covers seen in wintel on so many cars.
 "The result is an efficiency in opera ton which has made the Essex one O the most popular cars ever brought out as is shown by the more than 12, ,00' already in the hands of their owners"