I did not read the entire pdf, but I think it is out of date. That document is from 1999, and subsequently, the government redefined the quality of diesel fuel. So from reading the sites below, it looks to me like the marine (small engine) fuel and road fuel are the same (at least have the same sulfur content). Dave https://www.dieselnet.com/standards/us/fuel.php http://www.epa.gov/OTAQ/fuels/dieselfuels/index.htm
The cleaner diesel fuel program significantly reduces sulfur content, creating immediate health benefits, and allowing engine manufacturers to begin using advanced emissions control systems that further reduce harmful emissions. The diesel program regulations are located in 40 CFR Part 80 subpart I. A 15 parts per million (ppm) sulfur specification, known as Ultra Low Sulfur Diesel (ULSD), was phased in for highway diesel fuel from 2006-2010. Diesel engines equipped with advanced emission control devices (generally, 2007 and later model year engines and vehicles) must use highway ULSD fuel. Exhaust emissions from these engines will decrease by more than 90%. Regulatory Program: Highway Diesel Fuel Fact Sheet: Heavy-Duty Engine and Vehicle Standards and Highway Diesel Fuel Sulfur Control Requirements (PDF) (4 pp, 124K, EPA420-F-00-057, December 2000) Low sulfur (500 ppm) and Ultra Low Sulfur Diesel (ULSD) fuel will be phased in for nonroad, locomotive, and marine (NRLM) engines from 2007-2014. These fuel requirements, coupled with advanced emission control technologies, will decrease emissions from these engines by more than 90%. Regulatory Program: Nonroad, Locomotive, and Marine Diesel Fuel Fact Sheets: Regulatory Announcement: Clean Air Nonroad Diesel Rule (PDF) (5 pp, 122K, EPA420-F-04-032, May 2004) EPA adopted changes to the diesel fuel program to allow for the production and sale of diesel fuel with up to 1,000 ppm sulfur for use in Category 3 marine vessels. The regulations generally forbid production and sale of fuels with more than 1,000 ppm sulfur for use in most U.S. waters, unless operators achieve equivalent emission reductions in other ways. Regulatory Program: Category 3 Marine Rule (PDF) (1 pp, 125K, EPA420-F-09-075, December 2009) Fact Sheet: Regulatory Announcement: EPA Finalizes More stringent Standards for Control of Emissions from New marine Compression-Ignition Engines at or Above 30 Liters per Cylinder (PDF) (6 pp, 144K, EPA420-F-09-068, December 2009) Sulfur Content Since the 1990’s, fuel quality has been increasingly more regulated by the US EPA under the authority of the Clean Air Act. In the context of the increasingly more stringent diesel emission standards, the most important fuel property regulated by the EPA became the sulfur content. Historically, the sulfur content in diesel fuels for highway and nonroad vehicles was limited to 0.5% (wt.) by ASTM specifications. The milestones in US environmental regulations limiting sulfur levels in diesel fuels can be summarized as follows: Highway Diesel Fuel 500 ppm: Sulfur limit of 500 ppm = 0.05% (wt.) became effective in October 1993. This fuel, commonly referred to as low sulfur diesel fuel, was introduced to facilitate sulfate particulate emission reductions, which were necessary for meeting the 1994 emission standards for heavy-duty highway engines. 15 ppm: Diesel fuel of maximum sulfur level of 15 ppm was available for highway use beginning in June 2006. This fuel, referred to as ultra low sulfur diesel (ULSD), was legislated by the EPA to enable catalyst-based emission control devices, such as diesel particulate filters and NOx adsorbers necessary for meeting the 2007-2010 emission standards for heavy-duty engines and the Tier 2 light-duty standards. Nonroad Diesel Fuel The following sulfur requirements are applicable to Nonroad, Locomotive and Marine (NRLM) fuels, with the exception of heavy fuel oils (HFO) used in Category 2 and Category 3 marine diesel engines. 500 ppm: Sulfur limit of 500 ppm became effective in June 2007 for nonroad, locomotive and marine fuels. 15 ppm: Sulfur limit of 15 ppm (ULSD) becomes effective in June 2010 for nonroad fuel, and in June 2012 for locomotive and marine fuels. ULSD has been legislated for nonroad engines to enable advanced emission control systems for meeting the Tier 4 nonroad emission standards. s On Dec 10, 2014, at 9:13 PM, Robert Abbott via CnC-List <cnc-list@cnc-list.com> wrote: > I know this topic was discussed to great lengths, but to anyone who is > interested, here is the article I read that led to my question of marine > diesel fuel versus regular diesel fuel. Not being a chemist or material > scientist, and to any of those in these professions that might read this, to > me, it seems to be a matter of sulfur content. > > > http://www.epa.gov/otaq/regs/nonroad/marine/ci/fr/dfuelrpt.pdf > > Rob Abbott > AZURA > C&C 32 -84 > Halifax, N.S. > > > > > > _______________________________________________ > This List is provided by the C&C Photo Album > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go bottom of page > at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > Aries 1990 C&C 34+ New London, CT
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