I carry a little eye-dropper full of mineral oil with me everywhere. I oil everything with it, including flare nuts. Oil helps when you are actually making the flare also. The amount of oil we are talking about here is so minute that even if it were to get into a system with POE, it wouldn't make a bit of difference. For everything outside of a refrigeration circuit, WD-40 and dry graphite powder are my weapons of choice. On my PMs, I spray down hinges, door latches, linkages, ball joints, etc. WD-40 also works ok for keeping certain things from weathering and rusting, but I prefer to paint items like that with an enamel like Glyptal. Sorry to get so off track there... lol
Don't pick the fly crap out of the pepper.