^^nice H.D. aerial picks.
Drained the oil and replaced with fresh W100+ and a new filter, also pulled the plugs on the O-200. Will clean, check gaps, rotate then reinstall.
Some oil goobers on a couple of the lower plugs. High time motor sitting at around 1650 hours of a 1800 TBO Continental O-200.
After some work on cleaning them up. This is also where having a good relationship with your dentist pays dividends..... you get some non serviceable “real” dental tools for work like this.
Then re-annealed my washers
This link was provided to me by a good friend who is an aviation mechanic/Jedi master.
https://www.aopa.org/news-and-media/all-news/2012/june/01/answers-for-pilots-preventive-maintenance