I believe there are a lot more downsides to synthetic oil in a stovebolt than the alleged advantages. Just go flush a few bucks down the toilet- - - -it's easier and quicker than wasting the same amount of money changing oil.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!