Would yo uuse a Chemical Flush, or Radiator Conditioner, before changing hte Water Pump?

At this point, i think i should use the Radiator Conditioner.. BEFORE i change Water Pump, of course.. im wondering what ';Priming'; a Cooling System means. Seems the white ';Froth'; i saw, indicative of Cavitation, needs to be remedied.. so i can either:



1) Flush System with Chemical Flush, Run Water Through, Repeat (I can do Radiator, then engine, it will all be off anyways for Water Pump...)

2) Put ';Conditioner'; in there and then refill with Coolant; OR

3) use ';Blue Devil'; or something, and then do the same.



I ';Flushed'; it roughly 5000 miles ago, letting water run through and exit the Upper Radiator Hose. until it ran ';Clear'; but i never took the Lower Hose off, as i cant get to it.



So, i ';topped Off'; the Cooling system too, and my car ONLY has an Expansion Tank to add.. it is the ';Radiator Cap'; i suppose you could say...



If you were me, how would yo uSABE mY Cooling System? Water Pump will be Replace.d. What do i do BEFORE? Do i 1) FLUSH, OR 2) ';Condition'; to perhaps Coat something that is wearing Thin, or 3) ';Blue Devil'; to be on the Safe side, THEN Refill?



2992 Olds Calais 2.5L ';Iorn Duke'; Tech4, 180,000 miles.. Water Pump ';Weeping'; i see Drips at start-up AND i saw a white ';Froth'; think layer.. the Flush i put in was the same color, but that was new because i did that a long time ago. Thanks!Would yo uuse a Chemical Flush, or Radiator Conditioner, before changing hte Water Pump?
Hello Binky. good to hear from you again.Would yo uuse a Chemical Flush, or Radiator Conditioner, before changing hte Water Pump?
Blue Devil