Veggie Fuel

Unfortunately, this picture is kind of hard to see*. Written in dust on the back of the bus, it says "100% Waste Veggi" and "Zero Fossil Fuel". While this is a bit of an overstatement (we use a bit of regular diesel fuel to warm up the engine and a couple of times when the veggie system has failed), it is something we are very proud of. When I�ve explained it to people in the past, I think they might have gotten the wrong impression, what with all the media hype surrounding ethanol, biodesiel, etc. So here�s a brief explanation of how it works.

Our engine burns vegetable oil, not biodesiel. The oil comes straight from the grease barrel behind the restaurant and into our gas tank. (Gonzo collecting is the most fun part, see?) When looking for used vegetable oil, you have to be kind of particular about quality. Most fast food places use hydrogenated oil which is bad (for some reason I�ve yet to understand). Also, not having chunks of stuff floating in the oil is a good thing. Water content is another thing. Sushi places are generally considered to be the best places to obtain the oil, although we got our first tank full from The Keg in Bellingham.

Okay, so now you�ve got a tank full of used veggie oil. Most vehicles that have been converted to run on veggie oil also still have their deisel tank and fuel lines with duplicates for the veggie stuff. The veggie lines usually have another filter or two as well as a heat exchanger, to heat up the oil. But once you�ve got all that stuff in place, you just warm up the engine and veggie oil using diesel fuel and the throw the switch, and -badda bing- your tail pipe starts smelling like french fries.

The pyschological effect of not using fossil fuels to travel is really something. You are taking something that would have been thrown away and using it to power your vehicle. While you�re still not in the clear regarding environmental impact of traveling (additional parts need to be replaced, roads need to be built and maintained, etc.), you are lessening your impact drastically. So now, when we idle the bus for the 15 minutes we�re stopped at a rest area (or, in the case of being in Mexico, a stand of trees), I no longer freak out about wasting fuel.
Friday December 28 2007File under: travel, Mexico, environment

Toggle Comments (1)comment?
on Fri 28th Dec, 2007 01:02 pm PST Saxtor said:
Hey! Those are my old Crocs! Are they holding up alright? Sounds like a mighty fun adventure.
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