Loud Noise When shifting from P > D or R

[NissanDriver89]

I recently purchased a 1998 Nissan Altima, I noticed a few days later that when I put the car in Drive or Reverse, I can hear a loud noise that sound kind of like a grind/blender. It won't happend while the car is in park. The noise can be hear, too, when I move the steering wheel all the way in either direction and hold it there. However, the noise is not as loud. What could be causing this? the transmission? The fluid looks slightly brownish...
The car only has 103K miles

If there are any other questions I can answer to help figure out this problem, just ask. I appreciate any help. Thanks...

[QR25DE]

That sounds like a bad trans... does it drive fine in Drive and Reverse?

Or it's a power steering pump.. lol

[NissanDriver89]

The transmission shifts fine... I just added the Lucas Trans Fix and that helped getting rid of the noise but I notice that the transmission shift a little rough now and it feels like the car shakes a little when I let of of the gas. I think that is because this fluid adds friction as it also suppose to help to stop slips, which the transmission didn't have to begin with, I will be driving it some more to see if the shifting goes back to how it used to be.

I also discovered that the steering power fluid was low, added some and as far as that it seems that is now fine.