Running oil and cubex full gate open balls out.. Left the house this morning didn't top off the hopper, got sidetracked and came home to 59 degrees, unacceptable... Fired the oil for an hour or so withe the quad on blast.. 73 degrees.. Priceless.. No way will I accept being chilly with. Variety of fuel at my disposal. Maintain your heat don't chase it. Btw.. That is the oil guzzlers longest burn time in 6 or so years, can't believe I used to rely on that thief..