I was wondering if I bought a truck and planned on keeping it for as long as it last would it be better to go veg. stroke or bio-diesel. I was also wondering if you put the system on one truck can you switch it over to another truck on down the road with no problem. I like the veg. stroke system because it is easier to mess with then bio.,but is the cost worth it. I don't mind spending the money on it as long as it saves me $$. I was also wondering for the veg. stroke what all is involved. It is my understanding you just have to filter your WVO and then put it in is that correct.