ULSD vs LSD - Page 2 - Fuelly Forums
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Old 11-15-2008, 03:33 PM   #11
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Join Date: Dec 2007
Posts: 529
Country: United States
"Federal regulations require that all diesel fuel pumps be labeled to specify the type of fuel dispensed"

"But starting Dec. 1, 2010, only ULSD will be available for on-highway use."

"Energy content
In general, the processing required to reduce sulfur to 15 ppm also reduces the aromatics content and density of diesel fuel, resulting in a reduction in energy content (BTU/gal). A 1% reduction is expected, which may affect mpg."


So, yes, pumps must be labeled. Yes, it does appear that I have a pump that offers Low Sulfur Diesel based on the mandate requirements. And, yes, there is less power content in ULSD vs LSD.

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