i been looking into ways to save on fuel bills in my 97 12v. I looked into biodiesel making and then came across wvo systems, the biodiesel kits are a lot more money and a lot more time and work involved, the greascar kit i seen is around 1500 dollars, comes with a tank, heater, lines, switches, valves, and a nother preheater right before it goes into the ip. It starts and stops on #2 diesel and then you switch it over to the wvo tank after its warmed up. Any one had any luck with these. I would like to hear good and bad please. It just seems like a better way to go, all id need to do is filter and "boil" the water out of the wvo and put it strait into the tank in the bed and roll bringing my fuel costs down to almost free once its paid for itself in savings. i figured i could find wvo from all the local resterants.