[njsteve]

Following the "recommended 99 minimum octane" factory instructions in the owners manual, I threw 6 gallons of 100 Octane leaded avgas in the tank yesterday and took the old battleship for a cruise to a cars and coffee around an hour away on I-95. She really likes that leaded 100 octane! Noticeably smoother running and the idling exhaust smell was wonderful. Brought back some memories of the olden days.

Here's what the Autolite plugs looked like after I got back:

(BTW, all that gunk on the threads is the silver anti-seize that I liberally apply to all tapered seat spark plugs.)