INTERNAL COMBUSTION.

Hawera Star, Volume XLVII, 11 August 1928, Page 14

INTERNAL COMBUSTION.

MEANS OF PREVENTION,

ADVICE FROM AMERICA

Since tlie corrosion of metal parts that may take place inside the motor is largely dependent upon the presence of water in tlie crankcase, and the possibility, or it combining with oxidised sulphur compounds to form sulphuric or .sulphurous acid, it follows that evert precaution possible should be taken to prevent the presence of these agents in the crankcase. The following suggestions are ottered by the General Motors Export Company, New York, to minimise the occurrence of corrosion troubles: First: In told weather use shields or covers on the radiator to assist in maintaining normal operating temperatures. Do not permit excessive idling. Second • Endeavour to minimise the dilution of the lubricating oil caused by fuel reaching the crankcase. Use the “choke” as little as possible. Maintain proper carburettor adjustment and perfect, ignition to secure complete combustion of the fuel charge. Third : Drain the engine crankcases regularly, hollow instruction book recommendations on this for the respective car lines. Keeping the oil supply tor engine lubrication in good condition by draining and replenishment at proper intervals will do much to remove the contaminating conditions that promote corrosion. Drain the oili while the engine is hot and the oil agitated. Do not flush with kerosene. Refill to proper level with iresh, high quality oil of the grade recommended for the .engine. , Fourth : Maintain proper oil level by frequent replenishment with correct oil. If the oil supply is permitted to become low, the oil is recirculated more frequently than is desirable, which tends greatly to increase its contamination and to destroy its quality. Fifth: Keep engines in good mechanical condition. It is impossible to maintain proper piston seal in worn or s ored cylinders. These conditions permit excessive blow-by and dilution t-o, oe ur. . , ~ Sixth: Use good grades of fuel, avoiding those having high sulphur content. Seventh: When storing units for prolonged periods, drain the engine crankcases, refill with fresh oil, and run the, engines only long enough to assure thorough distribution of the fresh oil to every working part. Eiohth: When protecting bright parts with oil, avoid touching them with oil alter cleaning, and before nppl. ing the protective coating.