I have a strange desire ... I imagine a classroom. Adults shuffle in and head to their seats . I stand near the greenboard adjusting the lineup of square and round kerosene heaters and mason jars filled with colored and clear fuels ..... The bell rings to start class .... " Class ! .... See this Mason Jar full of red liquid ??? ... Don't use this ever !!! Throw this away ! Stop going to the gas stations that sell this stuff ! Stop writing kerosene heater reviews online about how your new Keroheat and Dynaglow both suck ! YOU caused that suckiness ! YOU decided what possible harm could using cheap off road dyed fuel do ? I'll TELL YOU !!!! It makes wicks stiff ! It causes hard as a rock carbon edges to the wicks top edge ! It changes how the heater burns from minute to minute .... NO KEROSENE HEATER ON THE MARKET LIKES THIS STUFF !!!! Don't you dare tell me what the gas station attendent lied to you about ... FIND CLEAR $3 A GALLON PURE KEROSENE .... IT MUST SAY LESS THAN 500 PPM OF SULPHER .... YOU WILL BE HAPPY FOREVER AFTER !!!! ... AND FOR GOD'S SAKE DRY BURN YOUR WICKS EVERY 5TH BURN !!! OR BETTER YET USE ONLY ENOUGH FUEL FOR THE TIME YOU WANT A BURN AND LET IT BURN ITSELF OUT TO COLD EVERY TIME !!!! CLASS DISMISSED ! GET OUT !