[68speedalert]

First off, if you removed the return side (the one with the hose clamp) fluid will drain out of the p/s pump resevoir. Why would you do that? oh well.

Secondly, unless you replaced the p/s box with a new/rebuilt unit, it still had the old fluid in it. Years ago, all you used was ATF for p/s and you know that is red. Your clear p/s has blended with the ATF and now looks red. Will not hurt a thing.

Usually a whine comes from air being in the system. When it is low, air gets in and makes the pump whine. It could be that all the air has not bled out of the system yet, even though it looks full. The fluid may look foamy when it's running. It may help to jack up the front end (tires hanging free) and turn the steering lock to lock a couple dozen times with the engine running . Shut it off, let it set a little, restart and see if it helps.

Reomving any lines is a waste of time and fluid. If you have power assist, the pump and box are working.

HTH,
Steve