The Basics:

WVO / RVO: Waste Vegetable Oil / Recycled Vegetable Oil
Used vegetable oil from restaurants and other sources that is filtered and used for fuel.

SVO: Straight Vegetable Oil. Sometimes used when referring to any car that runs on vegetable oil. More commonly means using new vegetable oil.

BioDiesel: Processed vegetable oil that is made into a fuel. Biodiesel can be run in any diesel engine without a conversion. Biodiesel is made by a chemical process called esterification, which removes glycerine. (The glycerine can then be sold for use in soap or other products.)

B20: 20% biodiesel, 80% dinodiesel
B80: 80% biodiesel, 20% dinodiesel
B100: Biodiesel 100%

Cubie: A plastic jug of vegetable oil, typically used by restaurants. Often considered to be 5 gallons. The ones I purchased are 560 oz = 4.375 gallons.

Dino Diesel: A term for the standard form of diesel fuel that is derived from dinosaurs.

You either need to convert your fuel or your car. Meaning:
You can take any diesel engine with no modification and use a converted fuel in it -- run it on biodiesel.
You can take a diesel engine car, convert it, and run it on vegetable oil.

Single Tank System:
A type of vegetable oil conversion that only requires a single fuel tank. This conversion works with indirect injection diesel engines.
The 1980-1986 Mercedes are perfect for a single tank conversion if they are driven in warm climates like Southern California.

Two Tank System:
A type of veg oil conversion that requires two tanks. This type of conversion is done on a direct injection diesel. One tank (typically the smaller one) filled with diesel or biodiesel fuel is used for starting the car and driving for several minutes until the engine is warm. Then you flip a switch and the fuel changes over to vegetable oil. Several minutes before arriving at your destination, you switch back over to the first tank to flush all the veg oil out of the lines, leaving the lines filled with diesel/biodiesel.

What you need to get started (for a veg oil car)
1. A diesel car.
2. A conversion kit & a mechanic to install it. (Most conversion mechanics will get the kit for you & ensure they have all the right parts for your car.)
3. A source of vegetable oil. It can be new oil from Cosco, or waste oil.

What you need to filter used vegetable oil
1. Used vegetable oil from your local restaurant.
2. A 55 gallon drum
3. A 10 micron "sock filter"
4. A pump (we use a hand crank barrel pump)

What you need to get started with biodiesel
1. A diesel car
2. A biodiesel fueling station


Can I convert my gasoline car to run on vegetable oil?
No. It only works on diesel engines.