Can common rails run on 100% bio diesel reliably for long periods of time (say...the lifetime of the truck)? My owners manual, I believe, says it can only run on B5 (5%). If I was a betting man, I'd say that is merely propaganda from a company that's heavily vested in the oil business. I'd love to start doing this biodiesel deal, but I'd be pretty bummed if engine parts started to take a dump 50k later. Anybody have any good info on how it affects our rigs?

 

A few are using more then B-20 with out problems but they have also added an extra in line fuel filter to strip out the water that Bio may have in it. How the Bio is made also makes a difference in how well it will work in an engine.