Shell is a car wash and auto repair shop in Oxon Hill, Maryland, at 5604 St Barnabas Rd, Oxon Hill. It is open 24 hours, every day. Listed services: Gas station, Convenience store, Fast food restaurant, Oil change service, Wheelchair accessible entrance and Diesel gas and Mechanic and Debit cards. Call (301) 894-6565 to check prices or availability before you go.