Keeping Your Cool-ant
The no-hassle, drain-and-fill drill
by
Phil Coconis/autoMedia.com
Draining and filling your cooling system used to be a whole lot simpler. Back in the early days of ethylene glycol coolant/antifreeze, all you had to do was reach for the drain petcock at the bottom of the all-metal radiator and let it dribble into the drain pan. Then you refilled the radiator with a fresh 50/50 mix of coolant and water until you could see it at the "Full" line embossed into the radiator tank. After tightening down the radiator cap, off you went, with nary a need for a second look at your work. Try that procedure on a modern passenger car or truck today and you will likely end up with an abbreviated drive and maybe a "cooked" engine to go along with it!
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