Contact Us

GM Petroleum Distributors
2100 First Avenue South
Billings, MT 59101
(406) 252-4661

Brands We Provide

  • Conoco
  • Cenex
  • Exxon
  • Sinclair
  • VP Race Fuel
  • Mobil

Welcome to GM Petroleum

GM Petroleum Distributors “GM” located at, 2100 1st Avenue South in Billings, Montana was founded in 1964 by R. M.“Rollie”Grunstead. Southeastern Montana’s largest supplier of diesel, gasoline, lubricants, propane, aviation fuels including jet fuel. GM is an authorized Marketer for ConocoPhillips, Sinclair and Cenex fuels. GM Petroleum’s large fleet of transport and bulk trucks, allows us to serve our residential and commercial customers in a timely and professional manner. Portable skid tanks up to 12,000 gallons are available to commercial contractors; call for details.

GM Petroleum services a 200 mile radius around Billings, which includes North Central Wyoming. GM operates additional bulk plants in Forsyth, Miles City and Big Timber Montana. GM operates four discount fuel centers in the Billings metro area, including fuel centers at the bulk plants in Forsyth and Miles City. Click on the Discount Fuel Centers tab for additional information and locations.

Propane is a very important part of GM Petroleum’s business. GM supplies agricultural, residential and commercial customers from our bulk plant locations in Billings, Forsyth, and Miles City in quantities from 200 to 11,000 gallons. Propane services provided: bottles for barbeque grills, travel trailers, motor homes, and forklifts. GM Petroleum offers prefilled barbeque bottles, on an exchange basis, at most of our locations, including the Conomart Super Stores.

If you are looking for residential or commercial propane tanks, GM Petroleum sells and installs above and underground tanks. Owning your own propane tank allows you to take advantage of GM’s competitive pricing. Please give us a call and we can discuss the size of tank, best suited for your needs.

GM Petroleum earned Top Tier Marketer status, from ConocoPhillips, for our bulk oil repackaging facility. GM is an authorized Marketer of Conoco, Kendall lubricants, plus a wholesale supplier of Exide batteries with installation available at our 1819 Montana Avenue location.

GM owns and operates a chain of eight convenience stores located in and around the Billings area. Conomart Super Stores pride themselves on “Top Tier” Conoco gasoline and diesel, cleanliness with competitive prices. Check out their large product assortment, propane bottle exchange and fast friendly shopping experience. Click on the Convenience Stores tab for additional information and locations.

GM Petroleum and ConocoPhillps are proud supporters of the Billings community and surrounding areas.

Thank you, for your interest in GM Petroleum, we are certain you will be satisfied with our products, services and very competitive pricing.