Let me address things one at a time.

No leakage at the parting between the head and the block. No "oil" in the coolant. Oil is coolant free. I guess, so much for the headgasket theory.

I removed the plastic shroud and cover that hides the plug for the fans. I used a battery charger and the probes from a volt/ohm meter to test the fan. Fan runs when power is connected.

(I say RAY'-seen. My wife, who's a native Racinian says RUH-sEEn'.) If you figure this one out a Kringle will be on the way!