As I see it, scientists and researchers can write whatever they choose to in their theoretical papers. What the Service Letter and the e-mail from the Service Rep are based on is real world, in-the-field events. Problems and failures are occuring that are related to the use of biodiesel fuel or biodiesel blends. That is a fact, not conjecture. Real technicians in real dealerships are seeing real failures. Enough problems have occured to prompt this communication to all dealerships.

Although I'm not privy to the precise details of each problem/failure, I do know that if I/R Bobcat takes this seriously, so should I. As stated before, gotta go with who pays for warranty work.