Show cooling system in need of thorough cleansing to give a thorough cleansing to vio the cooling system disconnect the short section of hose between bottom of the radiator and pump connect the garage hose to the water pump and a longer section of hose to ta the bottom I 1 pipe of the radiator and lead it outs outside ide of the truck plug the overflow tube with a cork or rubber stopper turn on the water after starting the engine and it should be pumped through the water jacket and radiator till it run runs 8 clear if I 1 the radiator and water jacket of the engine are found to contain considerable sid erable scale or rust it may be nee eskary to flush the system out with a solution of hot water and washing soda and it way may eten be desirable to allow the washing soda coda solution to remain in the water system overnight to make sure buro the scale la Is loosened scientific american |