I love it when something works out RIGHT for a change.
Replaced the ORANGE coolant PO had in the 83 with G-05 and distilled water. Had planned on a standard flush and clean with zerex off the shelf cleaner, but this car has to have the cleanist cooling system I've ever seen on a two decade old car. Ever.
Every hose I pulled off, every opening I could get open and stick my finger in, was clean, no crud, no scale, no oil, nothing. Nada. I couldnt believe it. So I just drained the radiator, drained the block(got drenched), put in a new T-stat, new radiator cap, and filled it back up. No air pocket problems at all, temp is up to where I thought it should be, just slightly above 80C in normal driving.