With the car sitting for a long period of time when you go into reverse you hear it engage and whine like crazy while you back out.

Once it heats up it works fine and reverses

did tranny drain refill fluid was all red

04 350z any advise?

 

Back into the parking space. Don't let the car sit so long. Problem solved.

 

only time it sits is overnight and while at work otherwise its being driven lol just hit 130k of mostly city driving