www.centekindustries.com
These folks show a std house water filter with an element that is claimed to capture 99.9% of the oil, might be good for the SHEEN POLICE.
A std bilge pump probably wont work as the total head pressure would be too high , but a Jabsco with a rubber impeller* (yes there IS an "Oil Resistant" impeller ) would work just fine for that last slimey few gallons ,that* some non enviromental purists might contemplate pumping at midnight.