Oh, that is nice, MaxBobcat!
I need to do an experiment. Maybe what I'll do this Spring is tape off three sections on an old faded kettle cover and apply either grape seed or flax seed oil to one section, WD40 to another section, and PAM in the third section. And maybe a 4th - automotive polish. Then fire it up regularly and leave it out in the sun and see how it looks at the end of the season.