Cooling System, Cleaning

1. CAUTION: Always remove the water thermostat prior to pressure flushing.

To remove the rust, sludge and other foreign material from the cooling system, use Premium Cooling System Flush F1AZ-19A503-A or equivalent meeting Ford specification ESR-M14P7-A that is safe for use with aluminum radiators.
Cleaning restores cooling efficiency and helps prevent overheating. A pulsating or reversed direction of flushing water will loosen sediment more quickly than a steady flow in the normal coolant flow direction.
In severe cases, cleaning solvents may not correctly clean the cooling system for efficient operation. It will be necessary to use the pressure flushing method, using Rotunda Flush Kit.
2. Dispose of old coolant and flushing water contaminated with antifreeze and cleaning chemicals in accordance with local, state and federal laws.