If you add 92 gasoline and switch to 95, can you reduce carbon deposits?

OK. Why there are various grades of gasoline is actually formulated for the needs of engines with different compression ratios.

In principle, the compression ratio greater than 9:1 must be more than 90 gasoline, greater than: 1 is the best 92 or more gasoline, when greater than 10:1 is the best 95 or more gasoline.

Why is the recommended oil 92 or above marked in the fuel tank of many cars with high compression ratio, because there is now a variable timing system, although it can use low-grade gasoline, but it is only the lowest standard, barely usable, as long as the gasoline quality is slightly deviated, it can not immediately hide the condition that can make the engine work normally, it will shake, weak and light up the emission light.

So, when everyone loves the car logo.

When there is 92 or above fuel, although high-grade gasoline does not mean that the *** is too low-grade, I recommend taking its upper limit and high grade to ensure stable engine work and good combustion state, reduce carbon deposits and collisions between gears, and protect the vehicle's oxygen sensor.

In fact, in a car with a high compression ratio, when driving at an average speed, it is obviously fuel-efficient and runs far away. No matter how advanced the car is, it can't change the engine compression ratio.

and cylinder stroke. Low grades can be used in high compression ratio engines instead of optimal, in order not to knock, only to delay the ignition time, the premise that part of the power and power must be lost.

The 95 car and the 92 oil took more than half a year to accumulate more carbon. The carbon deposition of gasoline vehicles is formed by the incomplete combustion of gasoline in the cylinder, and the marking of gasoline refers to its octane number and anti-knock properties. There is no inevitable relationship between the generation of carbon deposits and the marking of gasoline, and the value of high-grade gasoline is only higher than that of low-grade gasoline.

The generation of carbon deposits is related to poor driving habits.

Introduction to standard gasolineStandard gasoline is composed of isooctane and n-heptane, while 92 and 95 gasoline differ in their proportions. The 92 gasoline is composed of 92% isooctane and 8% n-heptane, while the 95 is composed of 95% isooctane and 5% n-heptane. The higher the grade, the stronger the anti-explosion, but it is not the higher the legend, the better, you need to choose different grades of gasoline according to the compression ratio of the engine.

If you go to the gas station to refuel without the corresponding number of gasoline, usually add 95 gasoline but add 92, what are the consequences? The result is a detonation. Because the anti-knock performance of No. 92 gasoline is not as good as 95, if the two of them are mixed and used for a period of time, it will detonate, this situation will be significantly enhanced at idle, and incomplete gasoline combustion will cause an increase in carbon deposition, and fuel consumption has also increased late, on the contrary, 95 anti-explosion performance is better than 92, and it will not have much impact on the use of No. 92 models, there is no benefit and no harm, it is just a waste of money.

Effects of excessive carbon deposition in the combustion chamber:

1. The engine combustion chamber is the worst place in the working environment of the car, which is under high temperature and high pressure for a long time. Inevitably, carbon deposits also occur here, mainly from the pyrolysis of incompletely burned fuel. The carbon particles here are hard and pot-shaped, and in severe cases, they are honeycomb and have a certain thickness;

2. The carbon deposition here will affect the intake vortex, hinder the rate of flame propagation, and lead to a decrease in power, which will lead to engine knocking (commonly known as cylinder knocking), and even excessive pressure leading to combustion chamber breakdown;

3. Slight carbon deposition does not matter much, but carbon deposition in the combustion chamber is an accumulation process from slow to fast, so daily cleaning is very important.

4. It is difficult to start the vehicle in winter, and the engine shakes after starting, and even causes the engine not to start; There will be a lack of acceleration of the vehicle; Idle shaking of hot cars; The phenomenon of blind increase in the oil consumption segment; Every carbon deposit inside the engine will have a bad impact on the normal operation of the engine, and in severe cases, it will cause irreversible damage to the engine piston.

The commonly used methods are: dismantling and washing, hanging bottle cleaning, and fuel additives.

1. Dismantle and wash. This method is very direct and rude, but it is generally sent to the 4S store for disassembly, the disassembly of the engine is more complicated, no matter what parts will affect its performance more or less every time it is disassembled, you need to ask a professional master to disassemble. The carbon deposits in the engine with poor combustion width can be seen directly when dismantled and cleaned, and the cleaning will be relatively clean.

However, the cost will be relatively high, and it will also require technology.

2. Hanging bottle cleaning.

This method is also relatively common, the hanging bottle is to discharge the cleaning agent into the air intake, soften the carbon deposition and turn it into a slurry, and then burn it from the cylinder to discharge. Generally, the cleaning objects include the intake tract, throttle, intake valve, fuel injector, cylinder inside, etc., but the effect is not as direct and obvious as dismantling and washing.

3. Fuel additives.

One of the causes of carbon deposition is that the fuel burns insufficiently, which adheres to various parts of the engine and forms carbon deposits over time. The main function of additives is to drill into the pores of carbon deposits with the help of strong surface activity, destroy their structure, and gradually dissolve these carbon particles from the metal surface, and then discharge them through exhaust gas after burning with fuel at high temperatures. Effective fuel additives such as PNF stock solution are not corrosive, can clean the whole oil circuit, fuel tank impurities, fuel tank moisture, high-pressure oil pump, built-in gasoline filter, fuel injector, piston top, intake valve, exhaust valve, will not clog ternary, and the safety is relatively high.

Can I change the long-term addition of 95 gasoline to 92? This is actually based on the manufacturer's recommended label to make a decision, if the 92 gasoline is in the gasoline label recommended by the manufacturer, then there is no problem with adding 95 gasoline and then adding 92.

Nowadays, the oil ** is rising, many people have moved the heart of changing to 92 gasoline, but here is a reminder, if the manufacturer requires or strongly recommends the gasoline label and has 92, it is not recommended to change to 92 gasoline, because the gasoline and diesel label is too low, it is likely to occur the detonation of the engine, and the driving force has a certain amount of attack to reduce the stupidity.

If you accidentally add No. 92 gasoline, it is very difficult to pour it twice at a time, and if it is used for a long time, it is likely that it will form a lot of carbon deposits just because it cannot be ignited normally, which will adhere to the top of the piston rod, the cylinder, and the fuel injector and the spark plug of the car. In the intermittent future, it will continue to jeopardize the service life of the oil pump and its injectors.

There is also a situation that if the 92 gasoline is in the gasoline label recommended by the manufacturer, and the car buyer is all adding 95 gasoline for a long time, if you feel that the driving force is not enough, and the fuel consumption is very high, then you can also try to change to 92 gasoline.

Here we need to show the difference between No. 95 and No. 92 gasoline, gasoline marking means the octane number of vehicle gasoline, such as No. 92 gasoline, its isooctane accounts for about 92%, and n-heptane accounts for about 8%, because the anti-knock of iso-octane is good, and the anti-knock resistance of n-heptane is weak, so the higher the label, the higher the octane number, the better the anti-knock of motor gasoline.

Millions of car purchase subsidies.

Summary. Hello, I am your exclusive technician Cui Zhiqiang, attentive, careful, dedicated to answering your car questions, for you to find the corresponding problem solutions and solutions, hello diagnosis of this phenomenon does not need to clean up the deposit. 92 and 95 just say that the octane number is not the same, and the knock resistance is not the same.

The main ingredients in it are all pretty much the same. Well, do you need to clean up the carbon deposit, the first thing to consider when cleaning the carbon is your refueling station, if you haven't cleaned it for a long time, you can add the bottle of that kind of additive, such as acrylic added to the fuel tank, and clean it after fusion.

Dear, this question is up to me, it takes a little time to type, please be patient, thank you!

Hello, I am your exclusive technician Cui Zhiqiang, attentive, careful, attentive to answer your car problems, for you to find the corresponding problem solutions and solutions, hello diagnosis of this phenomenon does not need to clean up the charcoal. 92 and 95 just say that the octane number is not the same, and the knock resistance is not the same. The main ingredients in it are all pretty much the same.

Well, do you need to clean up the carbon deposit, clean the carbon deposit first consider your refueling site, if the long-term disadvantage has not been cleaned, you can add the bottle of additives, such as acrylic added to the fuel tank, after fusion, enter the calendar to clean and run.

The No. 95 gasoline I used before, and now I want to change it back to No. 92, does it have any impact?

Hello dear, if the standard is 92, you can change it back, and it has little impact. Gasoline is mainly composed of isooctane and n-heptane. The grade of gasoline is named after the percentage of isooctane content in the gasoline.

For example, No. 92 gasoline refers to the isooctane content in gasoline is 92%, and the n-heptane content is 8%; No. 95 gasoline refers to the isooctane content in gasoline is 95%, and the n-heptane content is 5%. At the same time, isooctane has good stability and combustion value, so the content of isooctane in gasoline also reflects the level of gasoline's anti-riot ability. That is, the anti-riot performance of No. 95 gasoline is better than that of No. 92 gasoline, which is more stable at high temperature and high pressure, and is not easy to produce deflagration.

Secondly, the number of grades of gasoline added is related to the engine compression ratio of the car, whether it has a T turbocharger, etc. For naturally aspirated engines, when the compression ratio is less than 1, 92 gasoline is usually selected; In:

When 1 or more, use 95 and above gasoline. Turbocharged engines are usually more resistant to riot gasoline due to the greater load on the engine, i.e. gasoline of grade 95 and above. On the inside of the fuel filler cap of the car, we can know the recommended fuel grade of the car.

Use the recommended oil for the highest fuel economy. As shown in the figure below, a car No. 92 is a recommended oil product.