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Show CLEAN DEPOSITS FROM OIL BASE Sediment and Muck Accumulate Much Faster Than the Car Owner Ever Imagines. HASTY BUT NECESSARY JOB Small Lumps of Carbon From Cylinders, Cylin-ders, Sand From Road and Metal Turnings Have Been Found-Give Found-Give Engine Needed Care. (By WILLIAM H. STEWART, JR., President Pres-ident of the Stewart Automobile School.) AVhat a world of trouble you are storing up for yourself If you do not drop the oil base and clean It. Sediment Sedi-ment and muck accumulate faster than you think and sooner or later you will have a ruined engine on your hands. It Is not sufficient to change the oil regularly, as advised by the manufacturer. manufac-turer. The oil base should be taken down and the deposits removed occasionally. occa-sionally. Nature of Accumulations. The first time you do this you will be surprised at the nature of the accumulations. ac-cumulations. Small lumps of carbon from the cylinders, sand from the road, even particles of metal turnings left there when you car came from the factory, have all been found in the oil base. But worst of all Is the thick muck of burnt oil and carbon which covers the bottom and sides. The grit and other particles are heavy and sink to the bottom, but the muck remains even after the base Is drained of the old oil. The advice usually given to the motorist mo-torist may be summed up as follows: "Drain out all the old oil, replace the plug and fill to the usual level with kerosene. Run the engine not more than SO seconds, and then drain the oil base. Repeat If thought necessary. This stirs up the muck and sediment, which runs out with the kerosene. In this way the base and bearings are cleaned with a minimum of effort and without removing the crank case." Grit Splashed Around. "Stir it up!" Indeed, the grit which should He dormant until scraped out by hand Is stirred up and splashed all around the crank case and also carried Into the bearings. It forms a fine grinding compound, which either shortens the life of the bearings or clogs up the oil holes, causing the bearings bear-ings to run dry. The result Is even worse If the oiling system Is one of the present type forcing oil through a hollow crank-shaft directly into the bearings. Right into the bearings, mind you I and under pressure, too ! Can anyone defend this method after realizing what this means? It Is not a sufficient answer to say that the oil must pass through a strainer. So nlthough It is a dirty job and a disagreeable one to remove the crank case for proper cleaning, it is the only way to give your engine the care it really needs. |