Biodiesel producers get $1 from the federal government for each
gallon they produce. So while building a biodiesel plant
requires a substantial investment, the short- and long-term
benefits can make the initial payout worthwhile for public
fleets. Photo: Greenline Industries   One solution is biodiesel,
and it's available right now.  Because it lacks the lubricity
that the older standard provided, engines that run on ULSD
require more maintenance, resulting in more down-time and less
efficiency. With its high lubricity, biodiesel alleviates most
of those problems. It mixes well with petroleum diesel fuel,
even improving it in many ways. All engine manufacturers allow
up to 5% biodiesel without any affect on warranty.  Because
biodiesel is a strong solvent, its cleaning effect on older
engines will produce junk that may clog filters for the first
100 hours of use. Maintenance teams recommend an aggressive
filter change program until the engines are clean.  The question
then becomes: where to get this miracle d