This is effectively the thickness of the oil (though I cannot discover what 'sec' means). 28 sec oil is kerosene or paraffin, while 35 sec oil is deisel.
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Mister MicawberThis is effectively the thickness of the oil (though I cannot discover what 'sec' means). 28 sec oil is kerosene or paraffin, while 35 sec oil is deisel.Does SEC perhaps stand for Securities and Exchange Commission? I found this article on SEC Oil.