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Ethanol or methanol? The fine tuning of the fuel!

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Ethanol or methanol? The fine tuning of the fuel!

When it comes to improving vehicle performance, tuners always come across two prominent players in the world of alternative fuels: ethanol and Methanol. Both have their advantages and weaknesses, and it is important to know the differences between them in order to make the best choice for your own car. First of all are both alcohols, but her chemical structure and the properties sometimes differ significantly. Ethanol, better known as Ethyl alcohol, is the same alcohol found in alcoholic beverages. Methanol, on the other hand, also as Methyl alcohol known to be highly toxic and not suitable for consumption.

Ethanol or methanol?

A main advantage of ethanol in the tuning area is its Octane number. Ethanol has a higher octane rating than regular gasoline, meaning it ignites at a higher compression ratio. This can lead to more Power and lead to a more efficient combustion process. But not everything about ethanol is positive. It also has a lower one energy content per liter than gasoline, which means that vehicles that run purely on ethanol have a shorter range.

Ethanol or methanol? The fine tuning of the fuel!

Methanol, on the other hand, is often used in racing, primarily because of its ability to to reduce engine temperatures. It also has a high octane rating and, similar to ethanol, can keep the engine cooler, which can be crucial in extreme racing situations. But there are also disadvantages. Methanol is corrosive, and some engine components could suffer if they are not designed to work with the fuel. Furthermore, methanol is toxic, making it more dangerous to handle than ethanol.

Ethanol is safer, but cools worse!

Both fuels are in the tuning world because of their Performance improvement potential popular, but it is crucial to choose the right fuel for the specific case. The wrong fuel can not only reduce performance, but in the worst case it can also cause serious damage to the engine. In summary, both ethanol and methanol have their Advantages and disadvantages to have.

Ethanol or methanol? The fine tuning of the fuel!

Ethanol is safer to handle and has a higher octane number, while methanol is particularly valued in racing because of its cooling properties. Which of the two is best suited for your car ultimately depends on your individual requirements and intended use. After all, tuning is about getting the best out of the vehicle, and choosing the right fuel plays a crucial role in this.

Comparison: Ethanol vs. Methanol

Property ethanol Methanol
chemical structure C2H5OH CH3OH
Octane number (average) 108-109 105-112
Energy content (MJ/L) approx. 21.2 approx. 15.8
toxicity Low (but not drinkable) Highly toxic
Corrosiveness Moderate High
Industrial use Alcoholic drinks, fuel additive Racing, industrial applications
Cooling properties good Very good!
compression ratio High (thanks to high octane rating) High (thanks to high octane rating)
Note: Table not fully visible? Then scroll sideways!

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Ethanol or methanol? The fine tuning of the fuel!
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About Thomas Wachsmuth

Thomas Wachsmuth - He has been an integral part of tuningblog.eu since 2013. His passion for cars is so intense that he invests every available penny in them. While he dreams of a BMW E31 850CSI and a Hennessey 6x6 Ford F-150, he currently drives a rather inconspicuous BMW 540i (G31/LCI). His collection of books, magazines and brochures on the subject of car tuning has now reached such proportions that he himself has become a walking reference work for the tuning scene.  More about Thomas

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