(This may apply more to the TT/single guys as it will be more noticeable. Though NA owners are allowed to chime in to feel important too )
Anyway...
I'm currently doing my Mechanical Engineering dissertation. My topic is torque converter design and modelling.
An aspect which I am considering when designing a torque converter is ambient temperature. The way I'm integrating this is by stating that colder air = denser air = more oxygen = more fuel = more power/torque.
The relevance of this is that more power/torque through the engine gets put to the impeller of the torque converter. This then transfers to the turbine side of the torque converter at a higher value than it would be at warmer temperatures, putting more power through the remainder of the transmission and thus putting more power to the ground, possibly breaking traction.
With this higher value entering the torque converter from the crank (engine) side, the unit is more susceptible to being over-worked and - consequentially - damaged.
In short, if you could please complete the poll and (if you have time) leave a short comment detailing your experience of colder temperatures on traction and power output (compared to hotter temperatures with no change to your car's spec).
Thank you very much
James
*EDIT* of course the amount of temperature variation will affect the amount of output variation. Just a general consensus through experience is required!