[*13*]

Thank you for your thoughts.
The truck doesn't have a reservoir. I "think" the air is out. I'll check it again, tomorrow. I have refilled the radiator after running it a few times.
the fan clutch I have has a lifetime warranty. I'm swapping that out tomorrow.
The clutch is thermal, it has the spring on front. I pulls hard at startup. Still spins when warm but doesn't seem to have the same energy. I'm judging this by the noise level.
We'll see tomorrow...

On another note. I pulled a few of the plugs & they look as they should..Good!