Almost makes me wish I was driving enough to justify buying the kit for my ride. At ~$100/wk for diesel, & if you're getting your oil for nearly nothing the payback is pretty quick. Just heard on another list about someone who coked his rings running unheated veggie; looks like Frybrid covers that issue pretty effectively. If the D/R is running like a keeper I'd just go for it. Are these components you can easily adapt to another ride when & if the time comes?
-joe