Cooling System Specifications: Maintenance: Flushing
CAUTION:
Aluminum and plastic materials are used in radiators. Flushing solution used must be compatible with aluminum.
Back flushing is an effective means of removing cooling system rust and scale. The radiator, engine and heater must be flushed separately.
In severe cases, the pressure flushing method may be used. Always remove thermostat prior to pressure flushing. Do not back flush systems that have water shut-off valve in heater system, damage to valve can result. Various types of flushing equipment are available. Follow manufacturer's directions carefully.