| Aaa Potomac Ser Cen Loc Wheaton | 301-946-5200 | Wheaton Plaza-N Bldg | Wheaton | MD | 20902 |
| Aaa Potomac Service Center Loca Maryland Gaith | 301-921-4250 | Montmry Village Center | Gaithersburg | MD | 20877 |
| Adelphi Auto Service | 301-422-1440 | 2301 University Blvd E | Hyattsville | MD | 20783 |
| Advanced Towing Parts & Service | 301-772-1522 | 9299 Washington Blvd | Savage | MD | 20763 |
| Aladdin Associates Radiators | 301-948-2552 | N Summit & Diamond Ave | Gaithersburg | MD | 20877 |
| Alvin Glickman & Son | 301-336-1034 | 626 Ritchie Rd | Capitol Heights | MD | 20743 |
| Andrews Shell Service | 301-899-9836 | 6408 Auth Rd | Suitland | MD | 20746 |
| Aspen Hill Exxon | 301-871-6777 | 14011 Georgia Ave | Silver Spring | MD | 20906 |
| Aspen Hill Shell | 301-460-3414 | 4001 Aspen Hill Rd | Silver Spring | MD | 20906 |
| Auto Salvage & Parts Co Inc | 301-733-6696 | 16622 National Pike | Hagerstown | MD | 21740 |
| Belair Exxon Service Station | 301-262-4114 | 15711 Annapolis Rd | Bowie | MD | 20715 |
| Belle Grove Auto Truck Stop | 301-678-7344 | 12937 Orleans Rd NE | Little Orleans | MD | 21766 |
| Beltsville Shell | 301-937-2066 | 10920 Baltimore Ave | Beltsville | MD | 20705 |
| Beltway Plaza Shell Servicente | 301-474-3443 | 5550 Greenbelt Rd | College Park | MD | 20740 |
| Bethesda Exxon | 301-656-5030 | 7340 Wisconsin Ave | Bethesda | MD | 20814 |
| Blue-Gray Sales & Service | 301-739-6961 | 779 S Potomac St | Hagerstown | MD | 21740 |
| Campus Way Exxon | 301-499-8895 | 10350 Campus Way | Capitol Heights | MD | 20743 |
| Carbaugh Roy E Service Station | 301-223-9575 | 301 E Potomac St | Williamsport | MD | 21795 |
| Clear Spring Exxon | 301-842-3268 | 13102 Clear Spring Rd | Clear Spring | MD | 21722 |
| Cloverleaf Shell | 301-695-1505 | 5520 Buckeystown Pike | Frederick | MD | 21704 |
| Colesville Exxon East | 301-384-5300 | 13335 New Hampshire Ave | Silver Spring | MD | 20904 |
| College Park Exxon Servicentre | 301-864-3400 | 7110 Baltimore Ave | College Park | MD | 20740 |
| College Plaza Exxon | 301-279-5966 | 15211 Frederick Rd | Rockville | MD | 20850 |
| Colonial Shell And Food Mart | 301-942-3736 | 4101 Randolph Rd | Wheaton | MD | 20906 |
| Cornell Equipment Distributing Company | 301-845-8036 | 611 S Main St | Woodsboro | MD | 21798 |
| Corwins Towing | 301-829-1871 | 711 Ridge Rd | Mount Airy | MD | 21771 |
| D & D Service Station | 301-864-8732 | 5435 Annapolis Rd | Bladensburg | MD | 20710 |
| Dodson Texaco Service | 301-948-2553 | 15701 Frederick Rd | Rockville | MD | 20855 |
| Duleys Service | 301-262-8000 | 11611 Lanham Severn Rd | Bowie | MD | 20720 |
| Duleys Service | 301-464-8000 | Lanham Severn Rd | Bowie | MD | 20715 |
| Eichelberger Radiator Service | 301-739-9122 | 18124-A Maugans Ave | Maugansville | MD | 21767 |
| Executive Shell | 301-468-1897 | 12151 Rockville Pike | Rockville | MD | 20852 |
| Flower Hill Amoco | 301-948-1337 | 18267 Flower Hill Way | Gaithersburg | MD | 20879 |
| Four Corners Amoco Service | 301-593-5133 | 112 University Blvd W | Silver Spring | MD | 20901 |
| Furlow James N Trk Reprg | 301-759-9000 | 208 Market St | Cumberland | MD | 21502 |
| G & G Towing Silver Spring | 301-588-7090 | 2739 Garfield Ave | Silver Spring | MD | 20910 |
| Goods Exxon | 301-843-0355 | Rt 301 | Waldorf | MD | 20601 |
| Greenway Exxon | 301-441-2990 | 7619 Greenbelt Rd | Greenbelt | MD | 20770 |
| Hillandale Shell Servicenter | 301-434-2200 | 10201 New Hampshire Ave | Silver Spring | MD | 20903 |
| Iverson Mall Exxon | 301-899-9630 | 3000 Colebrooke Dr | Suitland | MD | 20746 |
| Kensington Mobil | 301-949-2783 | 10600 Connecticut Ave | Kensington | MD | 20895 |
| Metropolitan Towing | 301-568-4400 | 8472 Walker Mill Rd | Capitol Heights | MD | 20743 |
| Montgomery Mall Texaco | 301-469-9447 | Demcrcy Blvd & Westlake Dr | Bethesda | MD | 20813 |
| Olney Mobil | 301-774-6555 | 3100 Olney Sandy Spring Rd | Olney | MD | 20832 |
| Quince Orchard Texaco | 301-990-4344 | 600 Quince Orchard Rd | Gaithersburg | MD | 20878 |
| Richards Amoco | 301-498-7908 | 3581 Fort Meade Rd | Laurel | MD | 20724 |
| Rockville Exxon At White Flint | 301-231-0756 | White Flint Mall | Rockville | MD | 20847 |
| Savage Exxon | 301-498-3262 | 9016 Washington Blvd | Savage | MD | 20763 |
| Smitty's Tire & Truck Service | 301-463-2665 | 13001 Upper Georges Creek Rd SW | Frostburg | MD | 21532 |
| Universal Used Tires | 301-251-1609 | 7406 Westmore Rd | Rockville | MD | 20850 |
| West Laurel Shell Servicenter | 301-776-6485 | Md Route 198 & I-95 | Laurel | MD | 20723 |
| Wheaton Plaza Shell Auto | 301-946-8882 | 11030 Veirs Mill Rd | Wheaton | MD | 20902 |
| Wintergreen Shell | 301-762-1660 | 890 Rockville Pike | Rockville | MD | 20852 |
