Gas Station Sign from the 1973 Oil Crisis

Origin
The 1973 Oil Crisis began in October 1973 when the members of the Organization of Arab Petroleum Exporting Countries (OAPEC, consisting of the Arab members of the OPEC plus Egypt, Syria and Tunisia) proclaimed an oil embargo. By the end of the embargo in March 1974, the price of oil had risen from $3 per barrel to nearly $12. The oil crisis, or "shock", had many short-term and long-term effects on global politics and the global economy. It was later called the "first oil shock", followed by the 1979 oil crisis, termed the "second oil shock."

Effect
This sign was from a Shell Gas Station during the Oil Crisis. All petroleum (oil, deisel, gasoline) in a mile radius will begin to evaporate.