Originally Posted by barry12345

Well for my two cents stay away from green and use the zerex go-5 stuff if you have a choice. Should not be hard to source. I am not certain of the chemical action. But with some cars using green I found a whitish buildup of some mass on the enterance of the water tubes passages in radiators.

Now to be fair I had no ideal of when that anti freeze had been changed before or ever. I just found that I ran across it enough times and yet never heard anything discussed about it anywhere at the time.

This may be the stuff a previous poster described as found in their water pump. My thoughts at the time is it seemed to built up in areas of temperature change instead of all over. White in color and it has some mass.