Central Ohio Farmers offers a variety of fuels and a wide range of lubrication products to meet your automotive, agricultural, business and home heating needs. We provide regular delivery to Marion, Morrow, Crawford, Delaware and surrounding counties. Through our various subsidiaries we also serve Knox, Wyandot, Hardin, Allen and surrounding counties. Retail fuel is available at our unmanned fueling stations located at the Fuel Depot in Marion and the Card-N-Go in Tiffin. Orders can be placed by calling your nearest bulk petroleum location or by contacting the Marion office.

We are proud to offer over a million gallons of fuel storage, allowing us the privilege of offering you the opportunity to lock in a low price by contracting or prepay. Another srevice we are able to offer to our local farmers is our Farm Terms Payment Plan, which a special plan available to farmers, allowing them to fill at a lover price and pay only 4 times a year.

We maintain a customer service driven team with members ranging in experience from 1 to 30 years. We hold ourselves personally accountable for the quality of our products and services. Marion Oil has grown to become one of Central Ohio's most reliable, respected and trusted energy suppliers believing in Bio Fuels made from soybeans, corn and animal fat that meet ASTM spcifications.

We offer a wide range of petroleum products to meet your automotive, agricultural and business needs.


  • Regular gasoline
  • On-Road Diesel
  • Premium Diesel
  • Off-Road Diesel
  • Premium Bio-Diesel
  • HPCD (High Performance Clean Diesel)
  • Winter Blend Premium Bio-Diesel Fuel
  • Summer Blend Premium Bio-Diesel Fuel
  • Diesel Exhaust Fluid (DEF)