[Martin Donnon]

We only recommend a cold weather transmission fluid formulation for sub 30F conditions.
Any properly specced transmission fluid should be able to operate across a wide variety of climates.
Do you have a specific issue here - X - ?
If so what combination of hardware and transmission fluid do you have?

 

[Martin Donnon]

We encountered this issue right back in the day (2008) when we were first experimenting with different blends of transmission fluid. Obviously the frictional properties of the fluid change dramatically with temperature, so providing there is nothing wrong with the transmission then getting the right fluid in the transmission will get the job done. We would normally recommend WR35BTDF fluid for this application