Crossflow better Mr Gaskin.
Mechanical fan noisy too - no reason why a road car, even standard can't switch to leccy fan (s) and dump the mechanical one -
Why is it better - just want to know that's all? You have criticised me in the past for using non-descriptive words . As water cools it flows down through the rad I'm guessing that the crossflow rad slows this process down so may cool it more?
Noise, I think the whoosh of the mechanical fan softens the underbonnet noise (tappets etc) of a Z. Or is that my imagination Yes electric fans are good but is it worth the trouble and cost on a road car that does low mileage?