Q: Coolant flush before winter?
So I just bought my truck and everything functions great. I bought one of the coolant testers that sucks up the coolant out of your radiator and will tell you what temperatures it will protect to. It said I was good up to -34 degrees Fahrenheit, so that part was good. But there is no coolant in the reservoir, however the radiator is filled to the top. Also, the coolant is a brownish color with a few dark brown particles flowing around in the sample I took. So my question is should I just add some new coolant to the reservoir, or should I do a complete flush and add all new coolant? And is it necessary that I fill up my reservoir since the radiator is full?
My car has 67700 miles.
My car has an automatic transmission.
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