Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Drip gas is natural gas condensate, a naturally occurring form of gasoline found near many oil and natural gas wells, in natural gas pipelines, and as a byproduct of natural gas extraction. It is also known as "condensate," "natural gasoline," "casing head gas," "raw gas," "white gas," and "liquid gold." Drip gas has industrial uses as a cleaner and solvent, as a lantern and stove fuel, and as a denaturing additive for fuel alcohol. Some very early internal combustion engines such as the first types made by Karl Benz, and early Wright brothers aircraft engines used natural gasoline, which could be either drip gas or a similar range of hydrocarbons distilled from crude oil. Natural gasoline has an octane rating of about 30 to 50; later engine developments required higher ratings to produce more power without knocking or detonation. Beginning in the Great Depression, drip gas was used as a replacement for commercial gasoline by people in oil-producing areas.

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