Ive got a metal solvent tank with about 20 gallons of jet fuel (kerosene) in it. I think it would work much better if it had a little bit of heat on it, especially on the real cold days. I know kerosene is flammable, but not nearly as volatile as gasoline. Do you think strapping one of these block heaters on the outside of the solvent tank would be an issue as far as flammability is concerned?
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http://www.tractorsupply.com/tsc/product/kats-engine-heaters-magnetic-heater-200w