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Does alcohol burn hotter than gas?

By Matthew Wilson
Some people have reported engines overheating when ethanol blends are used, suggesting that ethanol burns "hotter." This is a bit mysterious since ethanol contains less energy per unit volume than gasoline, and the flame temperature of ethanol is more than 40°C cooler than gasoline.

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Also asked, does alcohol make more power than gas?

An equal quantity of alcohol fuel contains much less BTU's than gasoline, but when the fuel/air ratio is correct, alcohol produces more power and is a better fuel for racing or high performance applications than gasoline, even though it takes about twice as much fuel.

Subsequently, question is, which burns hotter gas or diesel? Gasoline engine exhaust will be hotter. Most Diesel engine powered vehicles get 20-40% better gas mileage than gasoline engine vehicles. This is because the Diesel engine is more efficient; that is, per pound of fuel burn Gasoline engine exhaust will be hotter.

Likewise, does 91 octane burn hotter than 87?

The higher octane rating means that the gas *burns hotter*, and if you give an 87 octane car 93 octane gas, you are making the combustion process burn much hotter than what the engine is designed to handle, making the car wear out much faster!

Which gas is better with ethanol or without?

The short answer is, no, ethanol-free gasoline is not bad for your car. Most cars today can run on ethanol gas blends up to E15 (15% ethanol) and on non-ethanol gasoline. And flex fuel vehicles can handle up to E85 (85% ethanol) without a problem.

Related Question Answers

Does adding alcohol to gas increase horsepower?

Ethanol is added to gasoline to increase the octane rating. Adding ethanol has an environmental benefit but not a benefit to your car, horsepower or miles per gallon. E85 or Flex Fuel is up to 85% ethanol/15% gasoline. The engine performs at basically the same horsepower but gets fewer miles per gallon.

Can cars run on methanol?

Methanol can be blended with gasoline in low-quantities and used in existing road vehicles, or it can be used in high-proportion blends such as M85-M100 in flex-fuel or dedicated methanol-fueled vehicles. Technology is also being commercialized to use methanol as a diesel substitute.

Why do race cars use methanol?

Methanol has less energy content than regular gasoline, so vehicles get about half the mpg out of the fuel. But it has a higher octane. As the smart people at Hot Rod magazine explain, race-car engines are built to squeeze more power out of that less-energy-dense methanol, by adjusting the air-to-fuel ratio.

Why is methanol not used as a fuel?

Methanol reduces gas mileage. It is more expensive per energy unit than gas. Getting water out of methanol is even harder to do than ethanol, and water corrodes engine hoses and seals, and shortens engine lifetime.

Can you put rubbing alcohol in gas tank?

But if you do find it helpful, you can put the rubbing alcohol into your tank in the same ratio that you would use for a commercial dry gas product - about 12 ounces of isopropyl alcohol for every 10 gallons of gas.

Why do race cars run on alcohol?

Most race car drivers prefer fuel that is methanol- or ethanol-based, and the reason is simple, really. Overall, alcohol-based fuel has a high octane rating which increases fuel efficiency. They adjust their air to fuel ratio. Methanol also conserves heat inside an engine better than gasoline can.

Can you use alcohol in your gas tank?

The principle behind pouring alcohol in the gas tank is as follows: When alcohol is added to a gas tank with water and gasoline in it, the alcohol sinks to the bottom and absorbs the water, forming a combination that is no longer harmful to your car's engine.

Does 98 octane clean the engine?

Do we need to fill the car with 98 octane sometimes to clean the engine? The short answer: no, getting some fuel injector cleaner from your local auto parts store and following the directions indicated will do more than a higher octane fuel would for cleaning out your engine.

Does driving slower save gas?

Driving slower does save fuel, but driving too slow does not. In fact, when we drive too slow, gas consumption increases. When you drive too fast, your car's gas consumption increases from anywhere between 5-33%.

Does high octane fuel clean your engine?

No matter what you've heard, premium-grade gasoline won't do more to clean deposits from your fuel injectors or other parts of the fuel system because today's regular gas contains the same detergent additives. The main difference with premium is its octane rating — 91 or higher compared with 87 for regular octane.

Will mixing premium and regular gas mess up your car?

By using higher octane fuel where lower is specified, you will create no problems with your engine. It does not (by popular belief) add any power to your engine, but will not harm it at all. When you mix different octanes of fuel, you are either increasing or decreasing the octane of the fuel at hand.

Can I mix premium and regular gas?

There's only 2 fuel tanks at a gas station. Any intermediate grades are achieved by blending regular and premium. It's really just a marketing ploy. Most cars are designed to run on regular fuel, and do not see any measurable performance or efficiency gain from running premium.

What can you put in a gas tank to ruin the engine?

If you are just mischievous and does not really want to destroy the engine, use sugar or any other sweet, sticky liquid. Sugar in a gas tank is an urban legend and it will clog up the fuel filter, just like other sticky sweet liquids such as honey, molasses, waffle syrup, pancake syrup, and similar things.

Is it OK to mix gas types?

With most engines, there is no advantage to using higher-octane fuels. In the majority of engines, it will run equally well with any specification of fuel that meets the required rating. Mixing fuel grades will have little if any effect.

Will 110 octane hurt my car?

EZ- Your engine is not set up to take advantage of 110 octane fuel, but it will definitely not cause your car to overheat. The higher the octane you use, up to a certain limit, the more resistant the fuel is to preignition/detonation/knocking, allowing an engine to run more ignition advance.

How much is gas in Alaska?

State Gas Price Averages
State Regular Mid-Grade
Alaska $2.925 $3.030
Alabama $2.128 $2.460
Arkansas $2.139 $2.444
Arizona $2.730 $3.013

How hot do diesel engines get?

around 1100 deg C

What is the price of diesel fuel right now?

National average gas prices
Regular Diesel
Current Avg. $2.474 $2.876
Yesterday Avg. $2.473 $2.876
Week Ago Avg. $2.440 $2.886
Month Ago Avg. $2.540 $2.986

How hot can diesel burn?

Conventional diesel fuels vaporise at temperatures between 149 °C and 371 °C. Conventional diesel flash points vary between 52 and 96 °C, which makes it safer than petrol and unsuitable for spark-ignition engines.