Flush Cooling System

For efficient operation, drain engine coolant, flush the entire system, and fill with clean antifreeze solution at least once a year.

CAUTION: NEVER remove the radiator cap if the engine is hot. Steam and hot engine coolant will spurt out and can burn skin. Allow the engine to cool down before you attempt to remove the radiator cap.

Tighten the radiator cap securely after you check the radiator. Steam can spurt out during engine operation if the cap is loose.

NOTE: Clean radiator if conditions are very dusty. Failure to clean leads to improper flow of coolants through radiator which leads to a temperature increase of coolants.

NOTE: ALWAYS check the level of the engine coolant by observing the recovery tank.

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A - Radiator Cap

B - Drain Valve

CAUTION: COOLANT HAZARD!

Wear eye protection and rubber gloves when you handle long life or extended life engine coolant. If contact with the eyes or skin occur, flush eyes and wash immediately with clean water.

1. After draining the coolant system, close all drain valves/plugs and fill system with clean water.

2. Install and tighten radiator cap (A).

3. Start and run engine until it reaches operating temperature.

4. Open radiator drain valve (B) and drain cooling system immediately before rust and dirt settle.

5. After all the flushing solution has drained, close the radiator drain valve (B).

6. Fill the cooling system with a mixture of antifreeze, soft water, and coolant conditioner as specified in the Fuels, Lubricants and Coolant section.

7. Check the coolant level. For more details, see Check Coolant Level in section Service-Daily/Every 10 Hours.