Add the title states I have a strange one. It seems to be coming from the engine fan area. Maybe water pump area but its hard to look in there. Anyway one minute i'm worried that i'm going to lose all my coolant due to the flow. then its dry as bone for a week or so. can water pumps go out intermittently? One minute leak like crazy then not at all? Weird stuff kinda had me scratching my head.

 

My truck is doing the same thing. I think it's the water pump weeping. All my temps are within spec.

 

My water pump was leaking out of the weep hole. I also found my radiator had been leaking just below the seal.
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https://www.ford-trucks.com/forums/s....php?t=1100077

 

You are a few steps ahead of me as I just flushed with Restore and doing ELC change over while doing the pump. I'm also doing the blue spring and fan belt.