Only By Under The Table Means Would This...
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For more on marking an answer as the "Best Answer", please visit our FAQ.I've always found application of a specialist cleaner followed by a power washer works. You can get these at any decent DIY chain - usually in a spray. You can hire a power washer for half a day or borrow one off a neighbour.
The only drawback is you may end up with a clean patch and have to power wash the whole area and then re-sand.
www.pavingexpert.com/stains is a good place to start! It has great idea for both shop-bought remedies as well as putting down cat litter to soak up the residue on newly dripped oil!
Good luck!