As a mechanical engineer with a focus on automotive technology, I can provide a detailed analysis of running a car with alcohol, specifically ethanol. Ethanol, also known as ethyl alcohol or grain alcohol, is a type of alcohol that has been used as a fuel source for vehicles. However, there are several important considerations to keep in mind.

Firstly, it's crucial to understand that not all vehicles are designed to operate on ethanol. Standard gasoline engines are not compatible with ethanol fuels without modifications. Ethanol has a different chemical composition and properties compared to gasoline, which affects its combustion characteristics and how it interacts with engine components.

E100, which refers to pure ethanol, is not typically used in passenger cars. This is because it can cause damage to the engine and fuel system components that are not designed to handle such a high concentration of alcohol. The materials used in seals, gaskets, and fuel lines may not be resistant to the corrosive properties of ethanol, leading to leaks and other issues.

Flexible-Fuel Vehicles (FFVs) are a different category. These vehicles are engineered to run on a blend of gasoline and ethanol, commonly referred to as E85, which is a mixture of up to 85% ethanol and 15% gasoline. FFVs have specific components and systems designed to withstand the corrosive nature of ethanol and to manage the differences in fuel properties. Even so, running an FFV on E85 can still present challenges, such as reduced fuel efficiency and power output compared to gasoline.

It's also worth noting that 100% ethanol is not commonly available for consumer use. Most ethanol fuel blends are less concentrated, with E10 (10% ethanol, 90% gasoline) being the most common in many countries. This blend is designed to be compatible with the vast majority of gasoline-powered vehicles without requiring any modifications.

From a technical standpoint, ethanol can be consumed as a very strong alcoholic beverage, but it is not suitable for use in standard vehicles without the necessary adaptations. The process of converting a car to run on ethanol involves significant modifications to the fuel system, including the fuel pump, fuel lines, and possibly the engine itself. This is not a trivial task and requires specialized knowledge and expertise.

In summary, while it is technically possible to run a car on ethanol, it is not a straightforward process and requires specific vehicle designs or modifications. For the average consumer, using ethanol as a fuel source is limited to FFVs or vehicles that have been professionally converted to run on ethanol blends. It is essential to consult with a qualified professional before attempting to use ethanol as a fuel in any vehicle.

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There are no passenger cars designed to take E100 (but some racing cars are) so it could damage your car engine. Even Flexible-Fuel vehicles (FFVs) -C which can run on petrol or ethanol -C can only take up to E85. 100% ethanol is hard to come by. Technically, it's drinkable as a very strong alcoholic beverage.Feb 11, 2014read more >>