M.G. Oil Company was founded by Marlyn Erickson in 1976. Headquartered in Rapid City, SD. M.G. Oil Company operates more than 70 company-owned operations in South Dakota & Wyoming employing over 600 employees.

While primarily a supplier of gasoline and diesel fuels,
we also distribute lubricants, and industrial chemicals.

We proudly operate:

  • Convenience Stores featuring Touch Free Carwashes
  • Casinos - Gambling Establishments
  • Travel Plazas - Flying J
  • Restaurants/Bars
  • Video Lottery

We value our employees, customers and dedicate ourselves to continually improve all aspects of our
business. M.G. Oil Co., supports community efforts and
agencies that improve the quality of life for employees
and residents in our service area.

Thank you for your business!

M.G. Oil Company



8:00 AM-5:00 PM


M.G. Oil Co.
1180 Creek Drive
Rapid City, SD 57703

(605) 342-0527
(605) 341-1899 Fax
(800) 333-5173