Show WATCH AIR PRESSURE PRESSURE 1 IN TIRES REGULARLY 55 Always Inflate tires with air never using gas Carbonic gas will pass through rubber thirteen times more quickly than will air In addition to the slight sll enlargement of a new tire after being In use for a few tew days a further natural decrease o of pressure will follow due to the escape of oxygen In i the confined confined confined con con- fined air This loss should be made up by the Injection of more air A As this is done the percentage of nitrogen will bo be gradually increased and the liability of slow deflation will decrease In tn proportion |