pellgun oil

[magicniner]

I've read one should (or could) use silicon spray (non fatty/greasy lubricant) - untrue?

Only if you clean it off all metal to metal wear areas and then lube them correctly, silicone oil is worse than nothing on metal to metal applications as it makes a nice grinding paste!
On Umarex pistols the CO2 lube will get on the metal mag and metal mag advance system.

- Nick