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What causes them to combust?
"There are no finger prints under water."
Originally Posted by Irving What causes them to combust? IIRC, there is a chemical reaction when the oil breaks down that causes heat to be produced and when it gets hot enough, bam, fire.
CRS 18-1-704.5
The phenomena is called "spontaneous combustion"! http://en.wikipedia.org/wiki/Spontaneous_combustion
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