Hey guy's, I have a question for you heating experts or none experts for that matter, I have to use kerosene for my heating fuel for the winter ( have a boiler for heat) and the tank ( 275 gal and sits outside in the shade all year long ) with no chance of moving tank, the person who lived here before me tried to use cut heating fuel and also heating fuel with an additive which both did not work,( both gelled up ) I dont know if the fuel was cut correctly or not just going by what he told me, So for the past 2 winters I have been using K1 kero. I am looking at using K2 kero because of the price difference $2.55 a gal vs $ 3.35 for K1. My neighbors who have the same scenerio as I do, had tried the switch and claim that they went thru twice as much k2 vs k1 and say to stay with K1, they claim that you will go thru the K2 much quicker, and you will end up burning twice as much. very little is said about the difference's between the two on any web site except that K1 is more refined and K2 is tinted red,Any one with any experience between the two. thanx