| Business | Phone |
| Iowa Oil Co 3343 Center Grove Dr # A, Dubuque 52003 | (563) 583-3563 |
| Molo Oil Co 123 Southern Ave, Dubuque 52003 | (563) 557-7540 |
| Mulgrew Oil Co 85 Terminal St, Dubuque 52001 | (563) 583-7386 |
| Perfection Oil Co 2655 Lincoln Ave, Dubuque 52001 | (563) 556-8444 |