Which coolant to use

[HammerDown]

Good luck getting those drains out. I've never been able to get it out of any of the motors I've tried it on.

Yup, same here with my engine > so I flush the system till completely clear water is in the block then drain what I can and do the math by adding coolant to the radiator.
PITA not being able to completely drain the block

 

[RLDSL]

Here's the way I locked mine. This way of locking it to the pulley, eliminates the possiblity of the fan unscrewing off the shaft when you stop the engine.

I like it because when puttering around below 2000 rpm in 5th, I don't hear any fan noise at all like I expected. Only when you are over 2000 do you here it roaring a little bit, which should work well when pulling a heavy load in 3rd and 4th gears.

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Nice setup, then it's mounted to the flange like the IH fan clutches instead of the ford setup I could have a couple of pieces of flat stock cut to shape and bent like that at my local metal supply to save any weight balance issues on the welds