Certified Oil Co (#170) ← View details 1380 Greenwood Avenue, Zanesville, OH 43701 +1 740-452-3990 certifiedoil.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Sunday: 08:00 am — 10:00 pm Monday: 06:00 am — 10:00 pm Tuesday: 06:00 am — 10:00 pm Wednesday: 06:00 am — 10:00 pm Thursday: 06:00 am — 10:00 pm Friday: 06:00 am — 11:00 pm Saturday: 07:00 am — 11:00 pm Your comments * — Required information