Mike Miller suggested using Smithwicks.  That wouldn't be the ideal fuel as Smithwicks is a beer; although I suppose some form of methane recovery could be devised!

  I think reasonable running could only be obtained on spirits and you're right Robert, plenty of outlets for alcohol.  For me it would be Black Bush (Bushmills black label 10-year old).  Unfortunately the tax on booze is pretty high here.  A US gallon of Black Bush would cost around $163.

  Regards,

  Niall