| Use the search for the Q&A board and use the search terms:
leather clean and you will find a few very good threads on
what to do. Use the Search to the right of this message or
at the entry page to the Q&A board beside Post New Message
PS.
The search below the 'control' section above is not
the search for the Q&A board.
Finally any good soap will work with removing the oil. You can also use a solvent like tecnu. See How Soap Works for a deeper understanding. Don't worry, it is very easy to remove the oil. It is only difficult once it bonds to human skin. | 
