Let me explain a little about it. We basically take a vehicle that runs on diesel and convert it to run on veggie oil. I know it may seem a little out of the ordinary, but if you're spending as much on fuel as you do on groceries, it may be something you want to consider. Also consider the first diesel engine was designed to run on peanut oil. We are just going back to the roots. The oil is a waste product from most deli's and restaurants that are happy to get rid of it. I own and drive a Ford F-250 which runs on this free fuel.