Car Envy Drive

I would never get one of these heaters for around $100-150. I would never mix used waste oil (filtered with a paint strainer) and gasoline 60gas:40oil mix and make black diesel. It only heats approx 1000 sq ft area. and produces 22k btu. Soo weak! and inefficient. It uses 1 gal of fuel per 24 hours approx. So messy and inefficient😏😏😏😏😏😏