Just a thought - or two. Go-Gone is a pretty good oil "cleaner." It is basically an Orange-Oil (not juice) based cleaner. But it seems to work pretty well on oil. Maybe in combination with a vacuum? Like you were doing a layup - after wiping down with Go-Gone. You might be able to pull the oil out - once it is loosened from the "glass. Be sure and use a "trap" on your vacuum setup!
BTW, this is sort of how Reverse Osmosis was discovered (by "legend"-anyway). A boat hull was pretty waterlogged (sea water) and when they put a vacuum and bag on it to try and save it. They noticed the water that came out was potable - not saline. Now, this may be urban legend - but a technique that might be worth adapting to your situation.
Cheers - Jim
Also, Purple Power?
Rebuilder's Zen Saying:
One thought leads to another. If these thoughts link into a chain we become bound to the project. This bondage is subtle and remains until we complete the tasks -- or, STOP Thinking
[Only registered and activated users can see links. Click Here To Register...]