We’ve been doing our best to follow ‘The Code,’ most recently researching the possibility of using biodiesel to run our on-set generators and possibly our vehicles (like those nifty Patagoniasurfers). But it sure is trickier than we thought. First of all, biodieselis made a few different ways: directly from vegetables (virgin oil), recycled from used restaurant grease (recycled oil), or from a combination of restaurant grease and rendered animal fat (yellow oil). Now, any diesel engine can run on biodiesel, howeverspecial modificationswould be needed if we were to take it a step greener, by enabling our engines to run directly on the used (unfiltered) restaurant grease. Of course, these modifications are expensive (anywhere from $900-$2500), but the combined long-term benefits of saving money on fuel and relieving stress on the environment by recycling used restaurant grease may be well worth it. Those prices are for a professional kit, however for Jacks and Janes-of-all-trades out there, you can convert your own engine following somedo-it-yourself videoswe found. Heck, if these guyscan do it, maybe we can too. Hmm. First we need access to diesel vehicles. More on that to come!