Engine Conversion: Anyone Can Use Straight Vegetable Oil

April 26th, 2008 BY Sarah Nelson | 1 Comment

A friend of mine recently moved to Vancouver, and she and I have decided that we are going to invest in an old Volkswagen van, convert it to run on vegetable oil, and take it on tours through the mountains with a scooter in tow.

How hard is it to convert an engine to straight vegetable oil (SVO)? Friends of ours switched over the diesel engine (of, coincidentally, a Volkswagen van) in a day or two. You just need a heater—the viscosity won’t be right otherwise—and a filter for the vegetable oil.

Golden Fuel Systems is an American company that specializes in just such engine conversions, and in this video they exchange a minivan’s gasoline engine for a diesel one, and then convert the diesel engine to run on either vegetable oil or, in a pinch, diesel. Oddly enough, although diesel minivans are manufactured overseas, you can’t get them in America.

The conversion drastically improves the fuel efficiency of a minivan—if you keep your speed under 75mph, this particular model (the Toyota Previa, 1993) it can get up to 40 miles per gallon!

Now we just have to figure out how to convert the scooter to SVO…