Is that the same as bio-diesel?

No, it's not. Basically, to run your vehicle on vegetable oil, you have to either convert your vehicle or your vegetable oil. When you convert your vehicle like we did, it is called Straight Vegetable Oil (SVO) because you are literally putting straight vegetable oil in your tank and then you drive. The filter and heating system makes sure the oil doesn’t congeal and clog things up.
Biodiesel on the other hand is converted vegetable oil. It is made out of used grease taken from restaurants or other places that throw away vegetable oil. The oil is filtered really well and to keep it from congealing it is treated with methanol and lye.