IMO the fuel reformer for diesel engines comes with less oversight from government agencies protecting the public. I would think that truck owners would have a "Buyer Beware" issue with the product as whether it works or not. New truck manufacturers would need much more proof as to how this product might benefit them, but this is just my opinion. Anyone have any other insight into this product for diesels. I feel the company would like to quickly move the diesel reformer to make some money, while the gas model goes through it's paces.