coolent
#1
coolent
i tried flushing my cooling system today in my 98 F150 5.4L. i ran a cleaning soulution through in, drained it , then ran water through the system. i realized after that during this process, i ran cold water through the engine while it was warm, could i have cracked the block or worse by running cold water through a warm engine? and why after all this i still have a browm tinge to my coolent? would love some help on this one guys!!
#2