oily, oiled or oiled-up?

I'd go with "oiled-up." It makes clear that the oil was put there as part of a process. Sometimes when oily and greasy are used to describe someone, it gives the impression that you mean it's their nature.

"Oiled" also indicates a process, but "oiled-up" indicates the job was done well, or thoroughly. "Dripping" would be excessive. "Oily" might imply "naturally oily."

Thanks, I understand. However, since this sentence is meant to express disgust, wouldn't it be also appropriate to use an "excessive" adjective like "oil-dripping"?

I think there is a clear difference between oiled-up and oil-dripping. I agree with MT's explanation.

Sorry Avangi's explanation.

Agreed, but couldn't "oil-dripping" be used here as some kind of hyperbole to express my disgust with more conviction?

Yes, you can use it as hyperbole, but that's a danger - once you exaggerate for effect, it can reduce the perception that you speak accurately in other ways. While "I've told you that a hundred million times" is clearly an exaggeration, "oil-dripping" can give a sense that you really didn't look closely enough to know what you're really talking about.

Grammar Geekyou can use it as hyperbole, but that's a danger - once you exaggerate for effect, it can reduce the perception that you speak accurately

Great point, GG!