goofy noise
 

hey yall ive got an unusual noise comin from just behind my power steering pulley, ive got a small leak from the resevoir and ive been brainstormin is it somthing as simple as low power steering fluid or is it the pulley bearing? it sounds like a almost rumbling grinding...now the noise is constant regardless of moving turning or idling, i just dont want to run out and buy a whole new set of pulleys and bearing if its something as simple as a new resevoir, please advise (im new to rx's just got my baby a few months back and im trying to read up so i can learn so bear with me)