<P« RURAL. NEW-YORKER 
707 
Less Expense and More Work 
\ our tractor will do more work—and do it cheaper—if it is kept 
properly lubricated. It will work tirelessly right through the busy 
seasons. But it needs an oil specially adapted to stand the high 
operating heat that tractor engines normally develop. 
So-CO-ny 
Tractor Engine Oil 
is the lubricant leading tractor manufacturers recommend. It stands the high engine 
heat and maintains a protective oil cushion on bearings, shafts and valve mechanism, 
that guards them against wear and keeps them operating easily and quietly. Keeps 
overhauling and repair bills small. 
It maintains a gas-tight oil seal between pistons and cylinders that assures every 
usable ounce of power from the fuel you pay for. 
Importance of Camshaft Lubrication. So-CO-ny Gas Engine Tractor Oil insures 
the proper lubrication of the camshaft that controls and operates the delicate timing 
mechanism for both ignition and valve action. It keeps gears and bearings free from 
wear and working with the absolute precision that largely governs the reliability of 
the motor’s performance. 
For correctly lubricating transmission gears and wherever a heavier oil is needed 
use Polarine Gear Oil. Keeps gears running quietly with the least possible wear. 
Fill the cups with Polarine Transmission Cup Grease. It is acid-free and all 
lubricant. 
For economical and efficient tractor operation buy your oils, greases and fuel where 
you see the So-CO-ny sign. 
STANDARD OIL CO. OF NEW YORK 
Principal Offices 
New York Albany Buffalo Boston 
