The Oregon Petroleum Association (OPA) is the statewide association of motor and heating fuel marketers.  OPA members continue to expand their businesses to include company-operated stations, convenience stores, car washes, cardlocks and other related trade.

Motor and heating fuel marketers most often join OPA to keep current about issues, establish professional contacts and enhance professional abilities.  OPA works with city, county, state and federal governments to inform elected and regulatory officials about petroleum marketers' concerns.  OPA also has numerous programs and services designed to help members reduce their daily costs of doing business.