Pumpelly Oil Company, part of the southern RelaDyne network, was one of four well-established businesses that merged to form RelaDyne in November 2010. Started in 1937 with a two-pump station in Westlake, Louisiana, Pumpelly Oil experienced continued growth and has become one of the largest oil and gas distributors in the state. The company provides its loyal customers with an array of products ranging from national brands of lubricants, specialty products, chemicals, on- and off-road fuels, and diesel exhaust fluid.

In 1989, company founder Bob Pumpelly stepped down from daily operations to become the company’s board chair. Since then, Pumpelly Oil has been led by his son, Glenn, who for over 21 years has grown the business to employing more than 70 people with a mobile fleet of 16 trucks.