[mike31154]

Yes, you'd need a heater to run veg oil or make your own biodiesel, but that gets a little complicated. You can also mix the veg oil and regular diesel up to a 50/50 ratio and it might work depending on your injector pump. This is just in an emergency I'm talking about though. Guys that have converted their diesel vehicle to WVO (waste vegetable oil) or regular VO will usually have two separate tank systems, one with WVO and the other with regular diesel. It incorporates a switch so that you start the vehicle with diesel, once it's running good, switch over to WVO and same idea before shutting off. You need to switch back to diesel to ensure all the fuel lines & injector pump are filled with diesel fuel before shutting down, or, as mentioned the WVO will turn to a solid in the winter.