Ultra-Low Sulfur Diesel...
I haven't found any Biodiesel yet, but this is getting close. Today, I found ULSD (Ultra Low Sulfur Diesel) at a local Redding TA Travel Center. ULSD is the government's latest response to reducing emissions from diesel fuels. As opposed to conventional diesel sulfur content (which can be as high as 500 parts per million), ULSD is limited to 15 parts per million -- a significant reduction. And, it's relatively affordable. Prices hover around the same price as traditional diesel (which can vary from around $2.85 to $3.99 per gallon). I've been running my generator on ULSD for much of the afternoon while I work on my images and try to keep the RV cool while sitting in the hot parking lot at the Rover Hybrids shop, and have noticed a significantly reduced exhaust fumes. So far, so good!
And, ULSD is just one option. There are numerous others, including Biodiesel, Vegetable oil, Ethanol (for gasoline engines), algae... the list goes on. To help keep things straight, I've provided a "bio fuel chart" from the Sierra Club's latest online newsletter.
Click on the chart to enlarge itChart Courtesy of Sierra Club