[NewBlue]

It's better to wash a car when it's cold rather than hot so that the car won't leave any water spots or soap spots. Hell I've even washed my car when it was raining!! Just make sure you dry off the car once you're done washing it.

But on the very very cold days, I'd just give it a little bit more water all over just to make sure all the soapy feeling is gone. Or you could just use less soap.

 

[NewBlue]

Yeah I only washed it quickly, actually it wasn't really washing, I quickly rinsed off the dirt/grime when it was raining and then pulled it into the garage and dried her off.

BTW, never ever ever wash in the hot sun. If you have to just make sure you constantly run water all over the car to keep it moist.