Quote:Mate, I did not think for one instant that you were having a go at me & I appreciate your reply.

I guess that I look for a different kind of 'performance' in my dotage than I did when I was a nipper & the performance characteristics of a viscous fan, often called an Air Conditioning fan, fit my driving style.

I will differ on the assumption that the fan controls the engine temp though as this is the job of the thermostat & the radiator temp can be 1 degree above freezing, but the engine itself at normal operating temp if the thermostat is doing its job properly.