Oil and natural gas, generically classified together as petroleum products, are found deep within the earth in many parts of the world. What surprises many people is that oil is actually formed from the remains of small organisms, such as algae, plankton and vegetation which lived tens or hundreds of millions of years ago in oceans and lakes. When such organisms passed away, their remains settled on the bottoms of the oceans or lakes, and were covered by mud and sediment. The presence of oxygen with time helps organisms decay, but the small percentage of these organisms that would go on to form oil became compressed into oxygen deprived mud and rock. Over thousands of years, the pressure and heat exerted on the original layer became increasingly intense, eventually converting the organic matter into deposits of petroleum.

Such petroleum deposits are extracted by humans to be processed for use across many industries. One substantial use for such natural oil is the production of gasoline for automobiles with internal-combustion engines. But the oil extracted from underground, called crude oil, must be refined through the process of fractional distillation before it is ready to power an engine. Fractional distillation involves heating oil in a controlled environment in order to separate different kinds of hydrocarbons as their characteristic boiling points are reached. Through this process, chemists obtain the substance we know as gasoline.

Internal combustion engines, those utilized to power most vehicles, get mechanical energy through the burning of chemical energy in a combustion chamber. Such fuel combustion activates a piston contained within a cylinder, turning a crankshaft that turns the wheels of the car using a chain or drive shaft.

Today, measures are being taken to reduce consumer reliance on natural oil due to limited supply as well as widely held environmental concerns.
About the Author: Greg Chapman, of Greg Chapman Motors, is a leading used car dealer Austin has depended on since 1959. For more information please visit Greg Chapman Motors.