Hello, first time poster, long time lurker. Thanks for all the information everyone here is providing. Yesterday I was doing the 50hr maintenance on my MX6000 at 67hrs. Procedure went smooth but as I pulled off one the hydraulic filters I noticed a piece of black rubber in the filter. It appears to be part of the rubber gasket or some additional gasket material somehow got into the filter during manufacturing. I am leaning towards it being the gasket because that filter was way tighter than the other. I have seen this before from over tightening and wasn't to concerned until I started to pour the hydraulic fluid from the filter into the catch can. I noticed it being darker than any other fluid I have dumped in other tractors. I have read here or elsewhere at the 50hr maintenance the hydraulic fluid is clean. Attached are a couple of pictures. The picture of the oil actually has a flashlight shining toward the camera. History on the tractor usage has been minimal. Snow plowing, grapple, and bucket work only. All equipment was brand new. So what are your opinions on this? I am considering doing a whole fluid change and possibly an analysis on the fluid. I have several kits handy. Thanks for any responses.