| 1 | SERX | Service Tank Car Co. | 7/1930-4/1938 | | NAKINA |
| 2 | SERX | Shippers' Car Line Corp. (Service Tank Car Co.) | 1/1941-7/1954 | | NAKINA |
| 3 | SERX | Shippers' Car Line Corp. | eliminated 7/1956 | | NAKINA |
| 4 | SERX | Shippers' Car Line Division of ACF Industries, Inc. | added 7/1956; 10/1957-1/1975; eliminated 1/1976 | | NAKINA |
| 5 | SERX | Shippers' Car Line Division, ACF Industries, Inc. | added 1/1976; 1/1980; eliminated 4/1988 | | NAKINA |
| 6 | SERX | ACF Industries, Inc. | added 4/1988; 1/1994-7/2000; eliminated 4/2005 | | NAKINA |
| 7 | SERX | American Railcar Leasing, Inc. | added 4/2005; 7/2005 | | NAKINA |
| 8 | SERX | Service Tank Car Co. | Apr-38 | | NRHS |
| 9 | SERX | Shippers' Car Line Corp. (Service Tank Car Co.) | Jan-52 | | NRHS |
| 10 | SERX | Shippers' Car Line Corp. | eliminated 7/56 | | NRHS |
| 11 | SERX | Shippers' Car Line Division of ACF Industries, Inc. | added 7/56; 10/57-1/80; eliminated 4/88 | | NRHS |
| 12 | SERX | ACF Industries, Inc. | added 4/88; 1/94-7/2000 | | NRHS |
| 13 | SERX | *SOUTHERN ELECTRIC RAILROAD | | | PWRC |
| 14 | SERX | +AMERICAN RAILCAR LEASING, INC. [ACF INDUSTRIES, INC.; SHIPPERS' CAR LINE CORP. (UNION CARBIDE - LESSEE)] | | | PWRC |
| 15 | SERX | ACF Industries Shippers Car Line Division | | | RSRV |
| 16 | SERX | AMERICAN RAILCAR LEASING LLC | | | SCAC4 |