Originally Posted by
white_n_slow
Seems like the number they should be pimping is miles/dollar, not miles/gallon, as the actual fuel economy isn't significantly different.
That's pretty tough considering people's price for WVO can vary...
But I would argue against it being "free fuel" as John says, aside from a select few people that have access to mass quantities of that stuff. I have no idea where I'd get 15 gallons of used veggie oil on a weekly basis.