I have a 2013 Rubicon with a 6 speed. For the last 3 or 4 months, the clutch has been making a lot of noise, like if it needed to be greased or something. Every time I step on it, it sounds like an old screen door opening. It's not a cable so I don't think there are any grease points. I'm pretty sure its a hydraulic clutch but Im no mechanic. I have it scheduled to go in on Monday to have them look at it but I'd like to have some sense of what Im talking about. The service department that I take it too is a joke... Thanks in advance if anyone has any suggestions as to what it might be.