I have an 05 3.5 Santa Fe. I noticed a whine when driving and turning. Also the resvoiur seems to be leaking the p/s fluid. I read that it might be a clogged resvoiur so tonight I removed it and cleaned it. The filter looked clean but the fluid is black. I put it back in and still whining and resvoiur is wet again. Please help. I'm trying to avoid an expensive repair shop and and just replacing parts