Powerstoke 6.0 Oil Cooler Lime-A-Away backflush Ford F-250 F-350 coolant flush Lots of rust debris.

UPDATE!!!!!! Fixed !!!!!https://www.youtube.com/watch?v=B9lvtksk6l4
My freeway Deltas where creeping back up to 20-22 degrees. The worst thing you can do is let this thing go. I'm mainly worried about restricted coolant flow to the EGR cooler. If the EGR cooler cracks you will blow a head gasket. I have about 200K on the truck and have the original head bolts and gaskets. I think the lime away dissolved the white looking paint chips.
Backflush adapter on Amazon
https://www.amazon.com/gp/product/B074JSLZCB/ref=as_li_tl?ie=UTF8&tag=fintechcomm0f-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B074JSLZCB&linkId=5e960dc1538d65a24b00ee74f665aca0