All Courses Bio-Fuel Use Crucial 2 Lessons Free All Courses Small engine conversion to alcohol fuel with duct tape. 3 Lessons $25.00 All Courses How to distill 190 proof (Fuel Grade) alcohol and a stiil that can 5 Lessons $50.00 All Courses . Ethanol fuel distillation 202 reflux and regasification 4 Lessons $99.00 View more courses