I have a 3510i Branson , I changed the hydraulic oil and filter , the filter I used was a napa gold 1202 supposed to be a good one I always thought, same as Wix filters . When I put the new oil back in I noticed that it was a little thicker than the old oil, but nevertheless tractor trani hyd oil. now when I start the machine up the pumps seem to whine alot and none of the hydraulics work very well, even when warmed for a half hour or so,better then but still not like it was before. Please someone give me some ideas as what to do?