Cosycoke is a blend of Pet Coke and Sunbrite for roomheaters and cookers. It works well on some appliances, burning hot and lasting well. It will blacken the glass on roomheaters. The ratings below are given to help you decide which is best for you. 3 spots = Excellent, 2 spots = Very Good, 1 spot = Good. Product name Cosycoke Heat Output • • Burn time • • Ease of lighting • Cost £9.00 Smokeless Yes Suitable for Roomheaters / Cookers