Dry gas
Encyclopedia
Dry gas is an alcohol
Alcohol
In chemistry, an alcohol is an organic compound in which the hydroxy functional group is bound to a carbon atom. In particular, this carbon center should be saturated, having single bonds to three other atoms....

-based additive used in automobiles to prevent any water in the fuel from freezing
Freezing
Freezing or solidification is a phase change in which a liquid turns into a solid when its temperature is lowered below its freezing point. The reverse process is melting....

, or to restore combustive power to gasoline
Gasoline
Gasoline , or petrol , is a toxic, translucent, petroleum-derived liquid that is primarily used as a fuel in internal combustion engines. It consists mostly of organic compounds obtained by the fractional distillation of petroleum, enhanced with a variety of additives. Some gasolines also contain...

 spoiled by water. The name Drygas is actually a brand name, owned by Cristy
Cristy
Cristy may refer to:* Cristy Fermin , Filipino talk show host* Cristy Lane , American country and gospel singer* Cristy Road , Cuban-American illustrator* Cristy Thom , American model, actress, and artist...

. It is a liquid that is added in to the fuel tank, that absorbs the water and keeps it in solution. Some brands contain methanol
Methanol
Methanol, also known as methyl alcohol, wood alcohol, wood naphtha or wood spirits, is a chemical with the formula CH3OH . It is the simplest alcohol, and is a light, volatile, colorless, flammable liquid with a distinctive odor very similar to, but slightly sweeter than, ethanol...

 and some contain isopropyl alcohol
Isopropyl alcohol
Isopropyl alcohol is a common name for a chemical compound with the molecular formula C3H8O. It is a colorless, flammable chemical compound with a strong odor...

.

Some states require a 10-15% ethanol solution be sold at refueling stations. Most current gasoline-powered automobiles can safely run up to a 15% ethanol solution without any modification. However, at 20% or above older vehicles may require replacing the fuel lines to prevent degradation and rupture, and the electric fuel pump
Fuel pump
A fuel pump is a frequently essential component on a car or other internal combustion engined device. Many engines do not require any fuel pump at all, requiring only gravity to feed fuel from the fuel tank through a line or hose to the engine...

 may need modification to prevent ethanol "dry rot
Dry rot
Dry rot refers to a type of wood decay caused by certain types of fungi, also known as True Dry Rot, that digests parts of the wood which give the wood strength and stiffness...

". There is no point in adding dry gas to fuel that already contains a significant percentage of ethanol, since ethanol is an alcohol.

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