Although it's hard to say for sure, it looks to me like someone is trying to promote the use of Biodiesel. Their claims are all exaggerated, or at least sensationalized. The effects of ULSD have been pretty minimal as far as leaks etc. Ask any diesel mechanic. I was in Cummins Northeast in Syracuse last week. I asked the guys what they've been seeing with ULSD. Their reply was "Nothing". I was expecting more problems myself.
Joe