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23 Million Miles a Year 
With Air Transport Planes
From the pioneering days to the present, Pennzoil has played an important part in the development of the superb system of commercial air transportation.  

This year Pennzoil will lubricate air transport planes through 23 million miles of flight-- a distance equivalent to 950 times around the world.  In the West alone Pennzoil furnishes safe lubrication to 3 of every 4 air mail planes.  

These Air Lines Use PENNZOIL Exclusively

UNITED AIR LINES             EASTERN AIR TRANSPORT
NATIONAL PARKS AIRWAYS       NORTHWEST AIR TRANSPORT
WESTERN AIR EXPRESS, INC.    UNITED STATES AIRWAYS, INC.

The heat developed in airplane motors and the constant speed at which they operate calls for the best in lubrication.  Year after year, double refined, tough-film Pennzoil gives unfailing service.
The same regular, everyday Pennzoil, which gives safe, economical lubrication to air transport motors is on sale at Independent Dealers everywhere for you car.  The dealer identified by the Red Arrow Safety System sign will "fit" the exactly correct weight of Pennzoil to the age and mechanical condition of your motor and to your own driving habits.  This scientific "fitting" will save you up to 12% in gasoline and give you added power and speed.

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PENNZOIL RED ARROW SAFETY-SYSTEM LUBRICATION

SAVES GASOLINE UP TO 12%

PAGE 2                     OFFICIAL PROGRAM