What We Do Home Heating Oil & Commercial Fueling Company To many Michigan homeowners, Marathon Flint Oil is a heating oil company. We are also a gas station supplier to over 60 Michigan gas stations, and a fast-response commercial fueling partner for many businesses and municipalities throughout southern regions of Michigan. We distribute heating oil, kerosene, bio-diesel fuel, gasoline, petroleum, ethanol, racing gas and diesel exhaust fluid to our growing list of customers. We also deliver motor oil, grease and lubricants. At Marathon Flint Oil, we deliver small business advantages in a big way! This means that we are small enough to give you the personal attention you deserve - whether you have a small home or a large company. We always answer our own phones, even after bus. hours.