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dont!! just use cool clear garden hose water. then replace with coolant mix.

Thereis a thumb-nut on the engine side, lower rightside ( when standing in front of the car facing the engine) Stuff will get everywhere

Really? No one had a problem with the above being passed off as an answer? Please. Keep your opinions to yourself children. 1. If you wish to flush your radiator and cooling system, familiarize yourself with your vehicle by asking a mechanic or two, and getting a repair manual, such as a Haynes manual. 2. If you have any doubt in your confidence to approach the problem on your own, you should take your vehicle to a licensed repair shop for the flush, most oil change shops offer this service 3. Please disregard the "answer" about hose water. First, unless your homes pipes are completely screwed, the water from a garden hose should always be clear. Two, the real issue the man child who originally posted neglected to mention is that "clear hose water" typically has dissolved solids that are invisible such as calcium (the white scum on your shower head nozzle, that is, if you shower) and you do not want these minerals to form deposits in your cooling system. So.... Every guide says to - - USE DISTILLED WATER ONLY!- That and most flush kits feature complete directions. - this post helpfully edited by a concerned internet citizen who is sick to death of low double digit IQs, opinionated 12 going on 40 year olds, and mentally incapable, inexcusable wastes of oxygen found online these days, spewing out useless opinion, drivel, and crap. Ignore these people and let evolution do its job to clean up our gene pool, please. Have a nice day.

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Q: How to flush radiator coolant on 1997 Buick LeSabre?
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