If it is easily reachable, take some paper towels then soak up all you can, once that's done, you can take a rag and spray it with Brake cleaner, and wipe all the area down, you may have to use a couple rags unitl is clean, brake cleaner will help remove the oil , and once dry leaves no residue. Just be careful brake cleaner is very flammable. once you are done, take those rags and lay them out flat to dry, don't wad them up and throw them away. Let them dry first, then do what you will with them..