I had a guy talk me through the oil change, filter change, cutting the filter, safety wire, sending it off, etc.
Pretty basic stuff. We dug out the glitter from the filter and went over it with a magnet and talked me through what would be a concern, identifying metal flakes from carbon.
It was quite a bit messier than a car due to the location of the oil filter.
All in all, a good learning experience and he seems knowledgeable about Grummans. He was quickly able to list what he likes about them and a number of quirks about him that irritate him so I think I am going to keep him.