MANSFIELD OIL OPENS FOURTH REGIONAL MARKETING, OPERATIONS CENTER IN HOUSTON

HOUSTON, TX – March 30, 2010 – Today, Mansfield Oil Company announces the opening of their latest marketing and operations center in Houston, Texas. The Houston office joins Mansfield’s national network of regional centers in Chicago, Denver and Detroit. Mansfield has also recently expanded their renewable fuels operations with expansion of the C&N Companies offices in Minneapolis and Mansfield Renewable Energy in Charlottesville, Va.

The Houston office will lead Mansfield’s Fuel Systems & Services line of business, provide sales and technical support to the DeliveryONE™ distribution network that is currently ramping up for expanded diesel exhaust fluid sales, and serve as the logistics and operations center for refined products sales in the Southwestern U.S.

“Houston becomes the fourth of six planned regional marketing and operations centers that are allowing us to continue to grow our fuel supply and marketing business with regional accounts while providing logistics support for our national accounts that have deep expertise in each regional fuel market,” said Michael F. Mansfield, Chief Executive Officer, Mansfield Oil Company. “As Houston is the center of the energy industry, placing an office here is a great fit for both our corporate and southwest business plans.”

Mansfield Oil Company will celebrate the grand opening of their Houston office with a day of events designed for their executives, customers, vendors and local media. Attendees will have a chance to hear the latest on the company’s current strategy and future direction from company President J. Alexander and Doug Haugh, Executive Vice President.

“We’re starting out with great additions to our team. Terry Tesch is heading up refined fuels marketing, Chet Davis is leading the Fuel Systems business unit and Max Boffa will be running our DeliveryONE™ efforts to grow the diesel exhaust fluid business with our distributors out of the Houston office,” added Doug Haugh. “And because it’s Houston, we’ll likely add ethanol marketing and supply positions over time to bolster the regional efforts of those business units that are headquartered in the Minneapolis and Gainesville offices.”