Great Western Petroleum

Serving Montana, Idaho, Washington, and Wyoming

About Us

Our mission at Great Western Petroleum is to provide products and services to our customers at a competitive price, while adding value through long term relationships, excellent customer service, and our broad knowledge of the petroleum industry.

Find a store!

Ten Distinct Locations

Our Services

Convenience Stores

Farm/Small Tank

Industrial Lubricants

Jet Fuel

Quick Lube Supplier

Authorized Distributor


1002 E. Broadway P.O. Box 8448 Missoula, MT 59801

Call Us

(406) 543-7621
(406) 728-7736

Contact us