GreaseCar question..

[truckinik]

Well, I know a lot of you are against the whole GreaseCar idea, as am I, and I don't think I'll be running one. I'm just a little confused about something. Do all of the Grease guys run both Diesel, and grease in their cars? I met a guy the other day with a Jetta, running on both, and he said they all do. I was under the impression that you had to either run one or the other perminently. This guy did his own grease conversion job, which is actually quite nice. He buys some switches and stuff, from GreaseCar, but made the rest of the system himself. I did not know, that you can still run both. He kept saying that he warms the car up with the diesel, and then hits the switch, and goes to grease.. Weird. He now has two tanks in the car. One is a heated grease tank, the other, is the original diesel tank.
They both work off of the same pump apparently also.. which had me even more confused, because I thought you need to run a special, or heavy duty, or even double pumps for the grease to flow.. Really strange.