Original Race Fuel Scented Candles - Diesel Fuel Scent Made from soy wax for a longer, cleaner burn time and scent 8oz tin can Approx 46 hours of burn time From the makers of the original race fuel scented candles. These race fuel scented candles are made out of soy wax for a longer, cleaner burn time with a stronger fuel scent. The 8 oz. candles burn approximately 46 hours. As a leading provider of race fuel scented candles, we take pride in offering the best motorsports scented candles on the market.