My car's transmission wont go into reverse when it's cold . . .
Typically, the seals in the transmission are hard and not containing the fluid under pressure. This problem will be worse when the weather is cold. This is one of the few times I believe in transmission additives. Find one that softens seals or conditions the internal seals. Read the directions, add the appropriate amount and see if that helps the transmission go into reverse quicker.
If this is the only symptom you have, I would never suggest that based on this alone, you spend a dime trying to make this better. Because the only repair for this type of a problem is a complete overhaul. Wait until other symptoms appear and create the need for a complete trans overhaul.
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