What is the best way to flush a 1992 Buick Lesabre?

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December 06, 2005 9:25PM

DONT!!!! harsh chemicals on an old system make for lots of trouble. Just use clean garden hose water and you be fine. If you a fanatic (like me) use lots of distilled water after you use the garden hose to flush out the garden water. While your in there replace the hoses and thermostat.