So I have the Wagon back in the garage for a few quick items, and decided to do an oil change since I'm due for one. This is my first change since I owned the Wagon.
Looking at the outside of the oil filter housing, I notice flaking paint and a little surface rust and I figure, like all the other parts I have touched, I'll take it out and clean it up. (also its the only part that the previous owner left original blue??!!?? go figure)

Anyway, drained the pan and pulled out the filter and there is still some oil in the housing, maybe an inch or so (hard to tell) so 2 questions.

1. Is this indicative of some issue that I need to investigate?
B. How do I persuade the oil out so I can take the housing off and clean/paint it?