http://www.green-directory.netenergy-efficiency/Biofuels/The Environment Web Directory http://www.greaseolineplus.comOffers tips and methods for making your own diesel fuels. Also explains \"lost\" technology of water injection to clean emissions and save fuel. Do it yourself book available. Simple, clear presentation. Explains the problem with hydrogen fuel saver systems. Offers gas savige tipsTue, 14 Jul 2009 04:02:01 GMT