How Would You Fix Small Hole in Oil Pan (a la mexicana)?

(Posting on FBBO also) My Mexican neighbor asked me what kind of product (silicone, etc.) he could use to patch his oil pan (he hit something on the road today). I told him maybe a product that plugs small holes in fuel tanks might be suitable. Anyone know from experience what he could apply that would work? Thank you.
Let me stir things up. :soapbox:
Your location says you're in Mexico. I would assume your neighbor is Mexican. (Maybe he's not?) Is his oil pan hole different than an oil pan hole that might occur to someone from a different country? That's the only reason that I can figure that you would mention that he's Mexican. My neighbor is Polish. What kind of hole would his oil pan get? :poke:
Anyhow, is he looking to save money? I can only assume so. Otherwise, he'd pull the pan and repair/replace it; whatever is the best option. If he doesn't mind potentially ruining his engine, well, that's another story. Go cheap, then.
I'm sorry, dibbons. I am picking on you. Maybe I'm reading your post incorrectly. In that case, I apologize in advance.