Gas Mart USA ← View details 1445 North Main Street #1-44, Saint Clair, MO 63077 +1 636-629-2222 exxonmobilstations.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Sunday: 12:00 am — 11:59 pm Monday: 12:00 am — 11:59 pm Tuesday: 12:00 am — 11:59 pm Wednesday: 12:00 am — 11:59 pm Thursday: 12:00 am — 11:59 pm Friday: 12:00 am — 11:59 pm Saturday: 12:00 am — 11:59 pm Your comments * — Required information