Why is Methanol used as a petrol additive?

Methanol , also known as methyl alcohol, carbinol, wood alcohol, wood naphtha or wood spirits, has the chemical formula CH3OH(often abbreviated MeOH). It is the simplest alcohol and is a light, volatile, colourless, flammable, toxic liquid with a distinctive odor that is very similar but slightly sweeter than ethanol. It is used as an antifreeze, solvent, fuel and as a denaturant for ethanol. It is also used for producing biodiesel via transesterfication reaction.

So, Why should you add it to your Petrol Tank ?
Well, the simple answer is there are 3 answers! It is used for 3 reasons…
* One is that some areas have restrictions on fuel due to the local pollution levels so it may be required to add it as it burns cleaner.
* Reason two is that many stations use it to help evaporate water that gets into the fuel storage tanks.

Reason three for adding Methanol to Petrolis that it is the best from the point of view of reducing Detonation, followed by Acetone and then Benzole in that order.

Methanol can be added in all proportions up to 100 percent, but as an additive limited to 10 percent will give an Octane increase of about 5 points. For example 98 Octane can be increased to 103, or looking at it another way, cheap fuel of say 91 Octane can, by the use of 10 percent Methanol, or approximately three quarters of a pint per gallon, will produce fuel of 96 Octane.

 

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Created by Mistral Pure Chemicals. View website

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About mistralhowto

formulation chemist

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