Show poor lubrication will cause tractor to wear after a tractor handles a load for 35 hours 0 6 per cent of the lu in bri cating oil willbe will be kerosene that has been forced past the pistons according to J 0 wooley of missouri and when oil has reached such a state of dilution its lubricating qualities are almost lost careful investigations show that the crankcase crank case caso should bo be drained after three or four days of work the clean est of tile the oil may be poured back to fluech tho the case after it has been drained out refill with new oil the old oil la is useful in the hog and poultry houses |