| 1 | SCAX | Union Tank Car Co. | added 7/1956; 10/1957; eliminated 1/1958 | | NAKINA |
| 2 | SCAX | Shell Canada Ltd. | 10/1966 (not listed); added 4/1967; 4/1970-1/1980; eliminated 7/1981 | | NAKINA |
| 3 | SCAX | Shell Oil Co. of Canada, Ltd. | 7/1935-7/1954; eliminated 7/1956 | | NAKINA |
| 4 | SCAX | Shell Oil Co. of Canada, Ltd. | 4/38-1/52; eliminated 7/56 | | NRHS |
| 5 | SCAX | Union Tank Car Co. | added 7/56; 10/57; eliminated 1/58 | | NRHS |
| 6 | SCAX | Shell Canada Ltd. | added 4/67; 4/70-1/80; eliminated 7/81 | | NRHS |
| 7 | SCAX | *SHELL CANADA LTD. (UNION TANK CAR CO.) | | | PWRC |
| 8 | SCAX | *SOUTHERN CALIFORNIA REGIONAL RAIL AUTHORITY | | | PWRC |
| 9 | SCAX | Southern California Regional Rail Authority | | | RSRV |
| 10 | SCAX | SOUTHERN CALIFORNIA REGIONAL RAIL A | | | SCAC4 |
| 11 | SCAX | Metrolink, Southern California Regional Rail Authority | | USA | TRAFFIC |