Shouldn’t need a flush unless the coolant has started to break down and form sludge or deposits. In that case, the only Ford approved chemical flush is Motorcraft VC-1.
I assumed he would want to use the latest yellow coolant is why I recommended the flush, my bad. I personally use nothing but motorcraft products when possible, I wasn't aware of the motorcraft VC-1 flush, thank you for that info.
Are you saying the op should stick with the 2010 Gold coolant?