Biodiesel F.A.Q.'s Please click on the questions below to find out more about recycOil LLC's premium biodiesel fuel.  For additional questions please call us at (303) 544-1500. What is biodiesel? Where will I buy recycOil LLC's biodiesel fuel? When will the biodiesel be available for sale? What makes recycOil LLC's biodiesel so cost competitive? Why is recycOil LLC's biodiesel so good for the environment? Click here to download the recycOil Biodiesel Fact Sheet