I am in need to do a flush/refill of the cooling system on my 96 Eagle Vision TSI (built 12/95) with the 3.6L engine. And I have a few questions. 1: Where is the drain plug , what do I need to open it, and is it easily gotten at? (is there a diagram on line somewhere?) 2: Does any hose(s) have to be removed as part of a flush/refill? 3: Since this engine has no cap on the radaitor, I assume that the new coolent (what ever the amount that the manual states to install) is replaced via the "overflow" tank.