Flushing the ELC from the Cooling System
Some engines utilize Extended Life Coolant (ELC). See the Operation and Maintenance Manual, "Maintenance Interval Schedule" for the proper service interval. If an ELC was previously used, flush the cooling system with clean water. No other cleaning agents are required.
Flushing a Standard Coolant from the Cooling System
If you change to an ELC from another type of coolant, use a Caterpillar cleaning agent to flush the cooling system. After you drain the cooling system, thoroughly flush the cooling system with clean water. All of the cleaning agent must be removed from the cooling system.
Note: See the Operation and Maintenance Manual, "Cooling System Coolant - Change" for the draining procedure and for the flushing procedure.