Cooking oil engines for cars

Last April was held in New York Greasestock, a large gathering of grease cars, which despite its name, have nothing to do with the car but with John Travolta diesel vehicles adapted for use on vegetable oil as an alternative fuel.

To that end, with a second tank, filled with oil used in fryers decafeterías and restaurants, which is highly pollutant, as it is a waste, so get free.
Adapting a diesel to vegetable oil costs about $ 2,000, but its users claim that in less than a year recovering the investment.