Hey all, just wanted to share this water intrusion issue I had. I remove caps often to inspect and add Lucas grease if necessary. Last two inspections the grease at the end of the spindle was milky in color. Finally figured out why. I first thought the O-ring was bad. Removed it and it looked perfect. The cap looked perfect also. After a closer look with a putty knife I found the problem.
Easy fix had a spare cap and O-ring on hand.
Wayne