Sanity check please.
After having my A/C evacuated and charged. The Mechanic says. "I noticed that your mechanical fan will stop when the car is at operating temperature". Apparently he, or someone else got their elbow in it.
He seems to think that a viscous fan should lock up solid when hot.
It speeds up when the engine is rev'ed. The electric A/C fans work fine.
I've never really thought about this and was just wondering if he's right.
PS I have no over heating issues here in the "Swamp", Florida. So I'm thinking BFD!

Thanks, Dave