Below are selected excerpts from another articles about diesel in the US. This a couple years old but based on what it says it would seem exports have probably increased since it was written. You can read the entire article on the referenced website if you are interested. There are lots of similar articles out there. NOTE - I almost always provide websites where I get my information - I am not making this stuff up - it sure would be nice if others would post website sources of information.
http://www.cnbc.com/id/100943620
US becoming 'refiner to the world' as diesel demand grows
U.S. refineries are expanding their diesel-production capacity, not so much for truckers in the U.S., but for drivers in places such as Mexico City and Santiago, Chile.
Already running at their highest levels in six years, U.S. refineries are finding strong demand for diesel fuel, used widely in cars outside of the United States, and other distillates, like jet fuel.
"All these companies are expanding their export terminals—Valero,Shell, Marathon Petroleum, all of them," said Fadel Gheit, senior energy analyst at Oppenheimer. "Any companies with refining assets on the Gulf Coast are expanding their export terminals.
…The profitability is not that clear, but the trend is very clear."
Valero, the world's largest independent refiner, completed building two new hydrocrackers, one last year at its refinery in Port Arthur, Texas, and another last month in St. Charles Parish, La. Each cost about $1.5 billion and can process 60,000 barrels of petroleum feed stocks a day.
"We're talking about expanding them to make them even larger and we may expand an existing hydrocracker an another existing refinery," said Valero spokesman Bill Day.
Valero's stated goal is to produce the same amount of distillates as gasoline by the end of 2015 on a one-to-one ratio—unusual for the industry.
Marathon Petroleum told Louisiana regulators this month that in fact it is speeding up the expansion of its hydrocracking unit at the Garyville, La., refinery and will complete it in October, a full year ahead of schedule. Marathon will increase the hydrocracker's capacity by 20,000 for production of ultra-low sulfur diesel production, according to Reuters. Marathon is also overhauling a 275,000 distillation unit at the refinery.
Government data shows the U.S. exported 1 million barrels a day of diesel fuel for the week ended Aug. 2, about the same as the last several weeks, but up from 840,000 barrels a week earlier in the summer. The U.S. industry has increasingly found foreign buyers for petroleum products, mostly diesel but also jet fuel and some gasoline.
According to Bank of America Merrill Lynch, U.S. exports rose to 2.6 million barrels per day by the end of 2012, from 1.3 million in 2007. Wednesday's data showed exports of 2.9 million barrels per day in the past week. The U.S. imported 700,000 barrels of gasoline per day in the week, while exporting 258,000 barrels a day of finished gasoline.
Valero says it is responsible for about 20 to 25 percent of U.S. exports, and it exports 15 to 20 percent of the diesel it produces, and about 8 percent of the gasoline, Day said. In the second quarter, Valero was producing 1.3 million barrels a day of gasoline and 910,000 barrels of distillates, which include fuel oil, jet fuel and diesel.