Whenever people ask me about vegcars the conversation invariably turns to sourcing wvo (waste vegetable oil). “Won’t demand exceed supply soon?” they would ask. I always poo-pooed this assumption as somewhere off in an indistinct future. Well I reluctantly must admit, that time is fast approaching.
There is a great deal of oil being generated by restaurants that can be used in a vegcar. In fact, there is a tremendous amount of this oil that is well suited to vegcar use and is ending up in cattle feed instead. The main problem is that the renderers (the companies that collect used cooking oil and animal fat) have no practical way of separating the “good oil” from the “bad oil”. They drive around in a truck much like one that pumps out septic tanks, and suck the oil into the trucks huge tank. When they finish their route, they return to the processing plant and deposit their spoils there (pun intended, sorry).
The quality of oil varies greatly between restaurants. Some cook with lard, some with hydrogenated oils and others with 100% canola or soybean oil (preferred). Some restaurants dump more food matter in with the oil. Some places dump water into the drum with the oil. The net result in my experience, is that around 1 in 10 asian restaurants have oil that is well suited for vegcar use. Let me add that by “well suited” I mean that the oil does not require a great deal of processing. Just pre-filter it, let it settle for a day or more, and pour it into the car’s fuel tank.
The renderers do process the oil. They heat it, removing water content, and filter it. The result however is not well suited for use in a vehicle. This oil may be used to produce biodiesel or wind up as cattle food. While I am not against biodiesel (it has some goood applications) svo has many advantages. The main advantage is that no refining is necessary – eliminating the need for the use of toxic chemicals. Many people believe that the petroleum industry prefers biodiesel to svo since refining will be necessary. This is the kind of stoneage corporate thinking that has stifled progressive development in our society for more than a century.
I believe that what needs to happen is that vegcar drivers and converters need to sit down with the renderers and figure out a way to allow the “good oil” to flow to vegcar drivers and the rest to go to other users. This will have to make financial sense to all involved. I welcome such a discussion and have initiated conversations with one of the largest renderers in California. I am certain that some workable solution can be reached. In the mean time, there is always new veggie oil from Costco at $2.40/gallon.
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