AUTOPOST on MSN
95% clean vs 50%: Why coolant flush matters
Open the drain valve (drain cock) at the bottom of the radiator and let the existing coolant flow out by gravity. Then refill ...
How-To Geek on MSN
Topping off your coolant isn’t enough—5 reasons you need a flush
While new vehicles may have a “lifetime” coolant, there are some exceptions.
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