| Clark Oil & Refining Corp | 815-722-2697 | 1522 Clement St | Joliet | IL | 60435 |
| C-M-P Systems | 815-636-2122 | 508 Grand Ave | Loves Park | IL | 61111 |
| Cutting & Grinding Fluids Inc | 815-967-4400 | 317 Peoples Ave | Rockford | IL | 61104 |
| I D Tool Specialty Co | 815-432-2007 | 816 N Jefferson St | Watseka | IL | 60970 |
| Leach Oil Company | 815-725-2353 | 2365 W Jefferson St | Joliet | IL | 60435 |
| Mobil Oil Corp Refnry | 815-423-5571 | Interstate 55 & Smith Brdg Rd | Elwood | IL | 60421 |
| Phillips Pipeline | 815-932-8923 | Rt 17 W | Kankakee | IL | 60902 |
| Premium Oil Co | 815-963-3800 | 923 Fairview Av | Rockford | IL | 61101 |
| Rock Valley Oil & Chemical Co Inc | 815-654-2400 | 1911 Windsor Rd | Rockford | IL | 61100 |
| Viking Chemical Company | 815-397-0500 | 1827 18th Ave | Rockford | IL | 61104 |
