[Boar-Ral]

I called the company that manufactures the product, and they are extremely friendly people. He asked me to call him once I install mine to report my mileage, so they can use it for their statistics. He also told me that if I did not see an increase in fuel economy to contact him so that I can get a refund. I felt that for that price, and with such friendly people, I really have nothing to lose. We'll see how it goes, though. I've heard such mixed reviews on these things, but if it does what it claims, it will pay itself off within a few weeks.