They both have equal value, we use oil much more often than we use gold though. And usually gold has related fees when being turned into money. So I would go with oil, could get about two and a half full tanks of gas on $100.

Actually, they have equal value: $100! If you're wondering which is the better investment, then you should re-phrase your question as, "Which is more likely to increase in value, gold or oil?"

Are you a jeweller or a plane pilot up in the sky with an emptying tank ?

我觉得还是石油更有价值，虽然黄金和石油的价格基本齐涨齐跌，但就使用价值来看，石油要更大。何况石油终有用完的一天，但黄金不会，只是作为一种象征充当货币。可以这么说吧，黄金是作为储备用得，石油是作为消费用的。