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SOCOKY 
TRACTOR OIL 
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SOCONY 
TRACTOR 
OIL 
Keep Your Tractor 
Investment at Par 
Only correct lubrication can keep 
your tractor engine as good as new- 
free from destructive wear—full pow¬ 
ered for every purpose. The oil used 
must maintain just the right body 
and lubricating qualities at the high 
operating heat of tractor engines— 
considerably higher than automobiles 
ordinarily develop. 
So-CO-ny 
Tractor Engine Oil 
is the oil recommended by the lead¬ 
ing farm tractor manufacturers. 
Keeps pistons, cylinders, valves and 
bearings continuously coated with a 
wear-preventing film of pure lubri¬ 
cant at every engine heat. Keeps the 
engine running quietly and free from 
destructive friction. Holds compres¬ 
sion and gets every usuable ounce of 
power out of the fuel. Means small 
bills for overhauling and repairs. 
Crankshaft Lubrication Important. So- 
CO-ny Tractor Oil insures suitable lubrica¬ 
tion for the crankshaft bearings, whether oiled 
by the splash or force feed system. Keeps 
bearings oil-cushioned, friction-free, in per¬ 
fect line. Enables the crankshaft to receive 
and transmit the power generated by the 
flying pistons with the minimum of jar, 
vibration and strain. 
For the transmission and differential gears, 
universal joints and other parts requiring a 
heavier oil, use Polarine Gear Oil. It will 
coat and cushion the surfaces and keep the 
gears operating quietly with the least pos¬ 
sible wear. 
Where a smooth grease is needed use Polar¬ 
ine Transmission Cup Grease. It is add- 
free and all lubrieant. 
For satisfactory engine service and economy 
of operation buy your oils and greases und t 
the So-CO-ny sign. 
STANDARD OIL CO. OF NEW YORK 
Principal Offices: 
New York Albany Buffalo Boston 
