Long, long ago in the time of black and white tube televisions
 

Before battery operated flashing roadside warning lights. The highway crews would set out fire pots to warn drivers of road hazards. What fuel did they use in those little pots that would burn for days?

-rep you latter

Is this a contest of some sort?

white phosphorus

lamp oil or kerosene

Oil

napalm
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It was likely "coal oil".

Coal oil is a specific oil shale oil used for illuminating purposes. It is sometimes confused with kerosene or lamp oil, but coal oil is obtained from the destructive distillation of cannel coal, mineral wax, and bituminous shale, and hence called coal oil. A special type of coal known as cannel coal (classified also as terrestrial type of oil shale) is required to produce it.
Coal oil was first produced in 1850 by James Young on the Union Canal in Scotland. He was the first to patent the process of distilling this cannel coal into kerosene. This industry thrived in Scotland creating much wealth for Young.
It consists mainly of several hydrocarbons of the alkane series, having from 10 to 16 carbon atoms in each molecule, and having a higher boiling point (175–325°C) than gasoline or the petroleum ethers, and a lower boiling point than the oils. -wikipedia

I'm going to veer from the norm here and say dried cowpies.

beryllium?

Chuck Norris's piss?

I remember those things from my childhood. I always wanted to steal one because they looked like the bombs in cartoons and the 'Batman' series.

If you're feeling particularly nostalgic, you can still buy them as patio torches. http://www.premiereproducts.biz/prod...oledotorch.php

we seem to have quite a bit in common.
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Antifreeze?

Hanukkah candle oil of course...burned for eight days and eight nights