[jtgh]

there are 4 choices . all have pros and cons.

the electric need not run much , in fact only at stop lights .signs.

but the clutch fan is disengages. and uses virtually no power. Slips.

a directly bolted fan will indeed suck tons of power an fuel from any motor.
1950s all over again.?

then there is a flex fan that uses almost no energy and costs little. (tops)

the electric fan needs an inline radiator hose coupling with ECT to work reliably. (the ones that clamp to the hose are no good)
i tried others and all fail.

i installed my first in 1970 so , it's not new . (OTC kit)


the electric fan efficiency is low and so is the alternator, they compound
to huge heat losses total.

direct drive is the bench mark for 1:1 efficiency, IF ever there was.
same blades (like a submarine screw)
same playing field.

YMMV, heheeheheh

ps:
it does take load of pump bearings.
it is quieter then when clutch is hot and fully engaged.
and if clutch fan seizes, then this is a go.
I do like the beautiful simplicity of a flex fan.