Have You Flushed Your Cooling System?

Here's why. The cost of overhauling an engine can run into thousands of dollars; automatic transmission repairs also are expensive. And cooling system neglect could be responsible.

This system performs several functions: (1) it must keep the engine running within specified temperatures, not too hot and not too cold; (2) it cools the automatic transmission and, lest we forget, (3) it circulates hot water through the heater.

Temperatures inside an engine may soar to 4,500 - 5,000 degrees F., enough to melt an engine block in a matter of minutes if it were not for the cooling system.

Over the years there have been numerous developments that make it harder for the cooling system to perform these tasks. Today's engines run much hotter than in years gone by. Added emission control systems, smaller radiators and crowded engine compartments add to the challenge.

Use this check list to be sure your car will survive the cold months ahead.

To avoid problems resulting from rust, dirt and mineral deposits in the cooling system, it's best to give it an internal cleaning every year or two.

It's Easy! Here's How:

1. Begin with the engine cold and ignition off. Remove the radiator pressure cap.
2. Open the petcock at the bottom of the radiator and drain the coolant into a bucket.
3. Close the petcock and fill the radiator with water.
4. Start the engine and turn the heater control to hot. Add cooling system cleaner and idle the engine for 30 minutes (or as per the instructions on container).
5. Stop the engine and allow it to cool for five minutes. Drain the system.
6. Close the petcock, fill the radiator with water and let the engine idle for five minutes.
7. Repeat step No. 5. Close the petcock.
8. Install new 50/50 mixture of water and ethylene glycol antifreeze/coolant.