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Grab a pen and put a dash on your calendars, December 2010 marks the dawn of a new era in diesel fuel. From this month forth, all diesel pumps in the U.S. are required to dispense nothing but ultra-low sulfur diesel (ULSD) for highway applications. The multi-year switch to ULSD has allowed automakers to design oil-burning vehicles with complex emissions control technologies that have the ability to substantially lower the amount of particulate matter they emit, leading to cleaner-running automob

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The National Renewable Energy Laboratory (NREL) has just completed the first year of a study comparing St. Louis transit buses running on B20 biodiesel and ultra-low sulfur diesel (ULSD). Surprisingly the B20 buses actually had slightly lower average mileage than the ULSD fleet, 3.52 vs 3.58 mpg. The new study is the first to examine B20 use on buses equipped with exhaust gas recirculation systems. The EGR helps to reduce NOx emissions. Fifteen identical buses were examined in the study with

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Well, Ultra Low Sulfur Diesel (ULSD) has been readily available all of three days, let's argue about it. Yesterday, the president and CEO of the American Chemistry Council, Jack Gerard, issued a statement saying that U.S. lawmakers need to change the policy regarding access to domestic natural gas sources if we're going to keep making ULSD. Why is this, you ask? Because you can use hydrogen to desulferize diesel fuel. So while we've now got diesel engines that emit up to 90-some percent fewer pa

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This post was supposed to appear yesterday, but thanks to the 6.7 magnitude earthquake here in Hawai?i, I wasn't able to get online at all. Thankfully, it seems that the quake didn't cause much damage and no fatalities, and being without power or Internet for a day isn't really a hardship, now, is it? Especially when you can go out and take pictures of people responding to the situation (which is what I did, and discovered people charging $5 for a lunch of rice and boiled eggs. Wow).

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With elections less than a month away, U.S. lawmakers are eager to show constituents some measure of success. Biofuels, especially ethanol, have proven popular recently, but there is a general push for alternative energies going on in American politics. At the end September, the U.S House of Representatives passed a bill, H.R. 6203, that gives support to all sorts of alternative transportation energy sources: plug-in hybrid vehicles, solar energy and biofuels. This biofuels news was slightly ecl

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One of the problems with using fossil fuels is the sulfur that gets sent out the tail pipe. Clean diesel is one way to power diesel engines without the sulfur. The technical definition, explained over at the Diesel Technology Forum, is Ultra Low Sulfur Diesel, which means the fuel contains only 15 parts per million sulfur content, 97 percent less than current diesel. ULSD should be available to most consumers by October, and last Thursday was one of the first in a series of deadlines to get ULSD

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