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Does ethanol clean engine carbon deposits? Expert answers whether the fuel removes gasoline residues from the combustion chamber

Written by Bruno Teles
Published 06/05/2025 às 21:19
Does ethanol clean combustion chamber carbonization?
Does ethanol clean combustion chamber carbonization?

Expert clarifies whether the ethanol actually has the power to remove carbon deposits left by gasoline inside engine cylinders.

A common question among drivers is about the cleaning capacity of ethanol. Many question whether ethanol can eliminate the carbonization generated by gasoline in the combustion chamber. Professor Fernando Landulfo, technical consultant for the magazine O Mecânico and professor of engineering at FMU, clarifies this question.

The central question, sent by a reader named Rogério, was direct. He wanted to know if the ethanol effectively cleans carbonization caused by gasoline inside the cylinders of the engine.

Direct answer: ethanol cleaning the combustion chamber is a myth

According to Professor Fernando Landulfo, the answer is clear: no. The ethanol does not clean carbonization caused by gasoline specifically inside the combustion chamber.

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Although it does not clean the combustion chamber, fuel can have another function. The professor explains that, according to some lines of thought, ethanol helps dissolve certain impurities. These would be deposits left by gasoline in the fuel lines and injector nozzles. However, he emphasizes that this action does not occur inside the combustion chamber.

Fuel alternation

YouTube video

There is also discussion about the practice of alternating fuels in Flex-fuel cars. Some automakers, in fact, recommend this alternation of ethanol and gasoline in their owner's manuals. However, Professor Landulfo and the team at O ​​Mecânico magazine warn that this is not a rule that applies to all Flex-fuel vehicles. Each manufacturer follows its own development line and specifications.

In summary, the ethanol does not clean the carbonization of combustion chamber. Its possible solvent action can benefit other parts of the power supply system. For the correct use of ethanol and gasoline in Flex cars, the main recommendation is to follow the instructions in the vehicle owner's manual.

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Emir Mica Monteiro of the Birth
Emir Mica Monteiro of the Birth
06/05/2025 23:01

The national team's red shirt has no political connotation. Okay then.

Rod
Rod
In reply to  Emir Mica Monteiro of the Birth
09/05/2025 05:33

Die, that's it!

Marcos Alexandre Queiroz
Marcos Alexandre Queiroz
In reply to  Emir Mica Monteiro of the Birth
09/05/2025 23:47

Go to **** with your myth that solves it

Emir Mica Monteiro of the Birth
Emir Mica Monteiro of the Birth
06/05/2025 23:02

The national team's red shirt has nothing to do with politics. Yes, I know.

Fábio
Fábio
In reply to  Emir Mica Monteiro of the Birth
07/05/2025 14:13

They should wear the MST shirt, since it is a performance on the field.

Erick
Erick
In reply to  Fábio
07/05/2025 20:25

Hahahaha I wonder if Brazil wearing the MST shirt will get beaten up? Like land invaders get beaten up? They won't get past the first game.

Lucas
Lucas
In reply to  Fábio
07/05/2025 21:45

Not to mention that we will have several invasions on the field too… by the organized MST fans… they will invade and take over

Franco Sued
Franco Sued
In reply to  Lucas
07/05/2025 22:17

It is not because a mob dressed in green and yellow shirts invaded Congress, the STF and the Planalto Palace that another group wearing red shirts will carry out any invasion.

Mauro
Mauro
In reply to  Franco Sued
07/05/2025 23:49

That really isn't the parameter, but rather the history of invasions by the reds to these same buildings that never led to anything, but when it was, according to your words, "a mob dressed in green and yellow shirts", then things changed, they immediately said it was a coup, but a coup without weapons and without the support of the army, is that possible?

DiCaprio
DiCaprio
In reply to  Mauro
08/05/2025 06:59

The plan to kill the elected president and vice president was going to be a tickle. “coup without weapons”… stop repeating the phrase from zap

Jose Rissati Acosta
Jose Rissati Acosta
In reply to  DiCaprio
08/05/2025 19:54

Who wants to kill someone who is already dead.

Michael
Michael
In reply to  DiCaprio
08/05/2025 23:43

Your thesis is very clever... if it were delivered in a sanatorium 😱 LOL. How could the protesters kill the president if the demonstration was on Sunday, where everyone knows that the buildings are empty? Do you have a brain?

Marcos Alexandre Queiroz
Marcos Alexandre Queiroz
In reply to  DiCaprio
09/05/2025 23:52

They are so ****, it's funny. Can you imagine if the defense of the **** used these conversations of the **** on zap? LOL

Jose Paulo
Jose Paulo
In reply to  Mauro
08/05/2025 08:40

You made a very **** comparison but what can you do? You must have a pet **** lol..

Alechere Cherem Cheraneck
Alechere Cherem Cheraneck
In reply to  Mauro
08/05/2025 22:19

Only a **** can Compare Real and Fair Labor and Union Demonstrations to an Invasion Articulated for a Coup d'Etat, even in a Climate of Celebrations such as Victory, since This Coup had been Proclaimed since the Taking of Power in 2018 and throughout the Mandate with Threats of Self-Coup with Disruption of Democratic Institutional Orders, which did not Go Forward Due to the “Resistance” of the Population and Institutions and Also for having at the front a Cowardly Deserter Soldier-Captain since his Unhappy Subsistence as an Obsessive Terrorist Delinquent; proving until his last days of Power and Subsequent moments, on the Way to the Dungeon.
#NoAmnestyForGenocidalCoupist

Aldo
Aldo
In reply to  Alechere Cherem Cheraneck
09/05/2025 05:59

Where did you graduate, you ****?? In the school that shouts “back off ****”?????
It can only be!!! In order for this land to be saved, it would have to start all over again!!!!
Unhappy…

Marcos Alexandre Queiroz
Marcos Alexandre Queiroz
In reply to  Mauro
09/05/2025 23:50

Yeah. With a defense like that of yours, it's so easy that all the **** will be acquitted lol. Boy! You're a genius.

Salld
Salld
In reply to  Mauro
11/05/2025 06:10

Behind all this, who was the mastermind? 🤔🤔

Tadzo
Tadzo
In reply to  Franco Sued
08/05/2025 11:51

Because they have already done this several times. They destroyed Congress in 2017... farms like the orange farms in SP... all of this with impunity.

Luiz
Luiz
In reply to  Franco Sued
08/05/2025 13:53

They already invaded and vandalized public buildings a long time ago, have you forgotten these facts?
And it's obvious that they were infiltrated in this invasion and that they were the ones who vandalized and even received a pat on the back from the commanders guarding the buildings. Would they be congratulated for the successful action?
The scam is there, only those who don't want to see it don't see it

Jose Rissati Acosta
Jose Rissati Acosta
In reply to  Franco Sued
08/05/2025 19:53

I think you forgot about 2017 when the MST turned the Planalto esplanade into a war zone, they set fire to several ministries, but no one was convicted, it's normal that **** has no memory.

PauloSindpacatuba
PauloSindpacatuba
In reply to  Franco Sued
09/05/2025 00:00

I have no political party, but I will be realistic in telling you all that the glory years of the Brazilian team, especially up until 1970, were when they started wearing the striped sugar lollipop shirt. Then, not long after, the Brazilian team also wore red, blue, white, yellow and, worst of all, almost black shirts. The colors don't matter. The important thing is that they play beautifully and win titles, because if it's based on the color of the shirt, they've only embarrassed us lately with this little yellow shirt.

Sadrake Carvalho de Mello
Sadrake Carvalho de Mello
In reply to  Franco Sued
09/05/2025 08:22

A mob dressed in green and black that invaded the buildings of the three branches of government, but let it be clear that they were commanded by the reds. No one has any doubts about that.

Daniel
Daniel
In reply to  Franco Sued
09/05/2025 17:10

No, because you already did. Just get informed.

Marcos Alexandre Queiroz
Marcos Alexandre Queiroz
In reply to  Lucas
09/05/2025 23:48

Hahaha I've never laughed so much hahaha

Edu Veloster
Edu Veloster
In reply to  Emir Mica Monteiro of the Birth
07/05/2025 18:01

****, being ****, insane and clueless, the article is about fuel, then the idiot comes talking about the color of shirts, if it were pink, most people would also complain, because that's all they know how to do, complain about everything and everyone, except the **** who planned murders.

Ruy Gonçalves
Ruy Gonçalves
In reply to  Edu Veloster
07/05/2025 19:59

True, no one talks about who planned Bolsonaro's assassination?

Fabio
Fabio
In reply to  Ruy Gonçalves
07/05/2025 20:43

****-se

Philip
Philip
In reply to  Edu Veloster
08/05/2025 08:07

There you go, the crazy PTSTA from hell has arrived lol

Astrogildo Ikarus
Astrogildo Ikarus
In reply to  Emir Mica Monteiro of the Birth
07/05/2025 20:07

No. It has to do with the dwarfmental

Valter
Valter
In reply to  Emir Mica Monteiro of the Birth
08/05/2025 07:13

The yellow one doesn't either, hey!

Rod
Rod
In reply to  Emir Mica Monteiro of the Birth
09/05/2025 05:35

Bulls need something to do in life, so they stop being annoying.

Friar Chico
Friar Chico
In reply to  Rod
10/05/2025 08:19

And the **** idolaters of **** are only good for pulling carts, they have no other use, don't wait, they are good for spreading fake news and giving **** ratings.

Carlos
Carlos
07/05/2025 20:48

In the past, they said that putting kerosene (which is no longer manufactured) in diesel would clean the injector nozzles and prevent them from freezing in the winter. Is that true or not? I did that myself.

claudinei
claudinei
In reply to  Carlos
07/05/2025 21:42

I BELIEVE THAT ALCOHOL HELPS TO PRESERVE SINCE NINE NEVER DIES THAT PLAGUE

Friar Chico
Friar Chico
In reply to  Carlos
10/05/2025 08:22

In the past, my mechanic recommended putting a liter of kerosene in an alcohol tank, at least once a year,

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Bruno Teles

I talk about technology, innovation, oil and gas. I provide daily updates on opportunities in the Brazilian market. I have published over 5.000 articles on the websites CPG, Naval Porto Estaleiro, Mineração Brasil and Obras Construção Civil. Any suggestions for topics? Send them to brunotelesredator@gmail.com

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