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Hawera Star, Volume XLVIII, 5 January 1929, Page 12

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RADIATOR TROUBLE. A METHOD OF CLEANING. Overheating is usually traced to imperfect cooling through the radiator and water jackets becoming clogged with silt and rust. On new cars a useful cleansing method is to add about lib of washing soda to the gallon of water in the cooling system and run the engine for half an hour, then drain the flush out after the engine has cooled down. Neglected radiators, however, need another method to unclog them, but the owner will have to go to a garage fitted with compressed air. The radiator is removed from the ear and a water hose is connected to the pipe at the bottom of the radiator, where the bottom hose connection is usually attached. The jetlock at the bottom of the radiator is removed and a small nipple is put i n place of it and connected to an air hose. .Any other suitable connection to 1 an air line ’Will do as well. The pipe where the top hose connection attaches to the radiator is closed with a large cork. A large section of rubber cut from an inner tube can be held in place with large rubber bands, and will serve the same as the cork. With the radiator cap removed and the radiator standing upright, the water is turned on gradually and allowed to flow out at the top. If hot water is available the results are usually better and faster The air is then turned on in spurts, a little carefully at first, and then in bigger spurts, to blow a mixture of water up through the radiator coil. This is continued for a few minutes, the radiator being allowed to fill with water between the spurts of air. ’The water and air may be allowed to flow through steadily together at a rapid rate for a few minutes. Gare should be exercised not to ■place too much pressure on t.hc radiator and one should be careful to see that the air and water are passing through freely before a great amount of pressure is put on. This treatment loosens up the rust end carries it out at the top of the radiator, and does it much mere effectively than air or water alone. It is possible that with some experimenting this method of cleaning radiators could be"so developed that it would not be necessary to remove the radiator from the car. Cf course, if this can be worked out a great saving in time will be effected.