There’s a chill in the air and winter weather is just around the corner. After last winter’s extremely cold temperatures, it’s especially important for diesel fuel users to make sure they are ready.
That means winter treatment for diesel fuel, according to GROWMARK marketing manager for refined and renewable fuels Mark Dehner. “Diesel fuel is impacted by cold temperatures. There are paraffins, or wax, in diesel fuel and as the temperature decreases these paraffins start to precipitate out of the fuel and may get large enough so they’ll plug filters or fuel lines,” Dehner says.
As a diesel fuel supplier, GROWMARK takes pains to make sure that doesn’t happen for their customers by blending number one diesel fuel into number two to dilute the wax, or they will use chemical treatments. “Chemistry usually involves wax modifiers that will not allow them to conglomerate,” he explains.
GROWMARK also sells biodiesel blends in the winter. “A lot of our customers use biodiesel throughout the wintertime, but we have to manage it differently,” Dehner says. “We may use a combination of cold flow chemistry along with some blending of number one.”
Dehner says it all comes down to fuel quality maintenance.
Listen to my interview with Mark Dehner here: Mark Dehner with GROWMARK


Once again, the
A jury in the US District Court for the Western District of Wisconsin determined that Novozymes patent is valid and ordered Danisco to pay damages of more than $18 million for infringement. The jury also found Danisco’s infringement to be willful but the jury’s decision is still subject to the judge’s affirmation and possible appeals.
Outlining his priorities for farm policy this week, Agriculture Secretary Tom Vilsack stressed the need for continued support of renewable fuels in the next farm bill.
As a part of the national
The No. 33 Richard Childress Racing Chevrolet race car will feature a special-edition American Ethanol paint scheme at the race and will be driven by American Ethanol spokesman and
The two congressmen, pictured here with former National Security Advisor Robert McFarlane, outlined their Open Fuel Standard Act (HR 1687) which would set a deadline of 2017 for automakers to stop making cars that run on only gasoline. After than point, all American made cars must be either flex fuel (capable of burning gasoline, ethanol or methanol or any combination of these), or powered by natural gas, hydrogen, biodiesel, plug-in electric, or fuel cell.
A research team discovered that when corn stover is processed to make ethanol, three distinct parts of it – the rind, pith and leaves – break down in different ways.
ZeaChem has raised $19 million in Series C financing, led by Birchmere Ventures, and partner Sean D.S. Sebastian has joined the ZeaChem board of directors. “As an industry leader in the advanced biofuels and bio-based chemicals industries, ZeaChem’s proven capability to produce economical and sustainable petroleum alternatives is an innovation we are pleased to add to our portfolio,” said Sebastian. 