Hello, I have a 2007 F150 with 136K mikes, live at 6500' in the Az mountains, I regularly drive down/up a 26 mile dirt washboard road. My PS res is always wet with oil, I wipe it off and its always wet when I open the hood. I have let the level go down below the add mark, it doesn't make a difference its always wet but I cant see any cracks, the rubber gasket on the fill cap looks good. I can see oil movement thru the reservoir when at an idle and no leakage when raised over an idle. Any ideas? I guess I could just change the parts but don't want to spend the money not knowing ............

Thanks in advance,
Dave
Crown King AZ