No idea if it would work or not but I'd be tempted to try a heat gun if the oil doesn't get it. Just warm things up a bit and let it cool.
Tapping the pin with a punch a it, not to drive it out but to just move it a tad might help with the oil thing too.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."