ON CHANCING THE OIL

Evening Post, Volume CXVI, Issue 103, 28 October 1933, Page 13

ON CHANCING THE OIL

In tho interests of what they call "economy," some motorists are apt to ignore the instructions given by car manufacturers to drain and refil the crankcase with fresh oil every 1000 miles or so.. One hears these people explain that the oil still looks quite good, and, as they have been replen-. ishihg with fresh oil from time to time, it cannot be bad. It should always bo remembered, howover, that the lubricating qualities of an oil cannot 'be seen, and that one gallon of fresh oil when added to one gallon of bad oil equals two gallons of l;>ad oil. Oil in use becomes so con- ' taminated by impurities as to cause excessive wear owing to the fact that the wear-resisting properties of the oil can- ■ not keep-pace with the wear-producing ,; properties of the impurities. These impurities are unfortunately inseparable from the potrol engine. An ; analysis of engine oil which has been in use for over 1000 miles always rei veals the presence of such impurities as water, metallic particles from engine, wear, dust from the air, grit from the road, carbon from the cylinder heads, and petrol. This is a bad collection of wear-producing elements, and yet in spite of this somo car-owners, in order to effect an immediate saving ■ of a few shillings, are content to lot , these harmful agents ruin their engines. ' f

To insure adequate voltage all wiring connections should be kept bright and clean. Dirty connections will add resistance and consequently will cause voltage loss.

A new paint, mado of a rubber resin and used to protect under-fenders of cars, has been put on the market by ono of the big rubber companies. It is claimed to resist weather corrosion.