The gas station asks if you want fuel additives. The correct answer should be...

You asked me if I had any effect. I certainly said yes, but... Please use it with your doctor's advice.

When you go to the gas station to refuel, you often encounter the staff to sell you fuel additives, saying, "Your exhaust pipe is dark, you need to remove carbon deposits." "This thing can clean the oil circuit and increase power." This scenario has a lot of meaning to promote the health care products for the elderly. Then there is no use of fuel additives. Why do many auto manufacturers have fuel additives in their original factories? Is it really so amazing?

First of all, the exhaust pipes of all cars are black in touch, and they have nothing to do with carbon deposits. Do not be tricked by marketing messages.

Second, fuel additives are roughly divided into several categories:

1. Clean type: When the vehicle obviously feels that the oil supply is not smooth and the carbon deposition in the valve and nozzle area is serious, the fuel additive can be properly selected.

2. Maintenance type: The main role of this additive is to suppress the generation of carbon deposits and to protect the normal operation of the valve and the injector.

3. Octane Adjustment Type: Octane value refers to the knock resistance indicator of fuel oil. For instance, 92# gasoline has an octane rating of 92. This kind of fuel additive can improve the octane number of fuel to a certain extent, improve the quality of oil products, and can also play a role in energy conservation and emission reduction.

4. Synthetic type: This additive is a combination of the characteristics of the above three products and is a more advanced fuel additive.

Clean curing fuel additives can indeed clean some cylinders with slight carbon deposits, but this is not very significant. After the engine produces carbon deposits, it will cause problems such as weakened power, increased fuel consumption, and idling jitter. After cleaning the carbon deposit, the power and fuel consumption of the engine will be restored to the original good state, and it is impossible to significantly improve.

Subaru's original clean fuel additive has clearly stated that it is to restore engine performance rather than increase. Therefore, any fuel additive that is said to be a power booster and significantly reduces fuel consumption, you can equate him with a small advertisement that cures infertility. Of course, there is indeed a kind of fuel additive that can increase the power. It is only used in straight-line acceleration races and is not suitable for civilian vehicles. It will not be discussed here.

It should be noted that many clean fuel additives cannot be used for a long period of time. After cleaning, they tend to produce gums and dirt, which in turn accelerates the formation of carbon deposits.

For example, the original additives of German-made manufacturers are all BASF's stock solution, and then add different additives according to the characteristics of their own engines. The main component of BASF's stock solution is polyisobutylene amine (PIBA). According to related research, polyisobutylene amine (PIBA) can have excellent cleaning effects on carbon deposition in the fuel system and carbon deposition in the air intake system (intake ports, valves, injectors), but it will increase the carbon deposition in the combustion chamber. The production.

The main component of Chevron's stock solution is polyetheramine (PEA), although it will not increase the side effects of carbon deposition, but the effect of carbon deposition is not as good as polyisobutylene amine, and the cost is higher. When the engine carbon deposit is already very serious, the effect of reusing the clean fuel additive is very limited. It is better to go directly to the 4S shop to open the throttle and directly clean up the carbon deposit.

The octane-adjusted fuel additive is necessary for high-performance sports cars. If the car is required to add gasoline with a high octane number of 98, and there is a lack of petrol stations that provide gasoline No. 98 in the region, it is necessary to add this type of fuel additive every time low-grade gasoline is added.

Or need to go to remote areas lacking gasoline 95, 97, it is also necessary to prepare a bottle of such fuel additives. However, it is usually not necessary, and using this fuel additive too frequently can damage the three-way catalytic converter.

The comprehensive fuel additive has the functions of cleaning, curing and octane adjustment at the same time, but the products with the design idea of ​​“both... and...” often end up as “neither... nor... ". Because the components of cleansing and maintenance are often not used for a long time, and the function of octane adjustment needs to be used every time it is refueled, this is very tangled.

In short, my suggestion is that the original manufacturer of fuel additives should be used as a doctor during maintenance. For example, BMW's original fuel additive is recommended to be used between 10,000 and 20000 kilometers. It should be diluted in proportion before refuelling and then used three times in a row. And it is best to use about 2000 km before maintenance, so that the dirt and gum that are washed out can be replaced together with the fuel filter during maintenance.

In addition, there is no need to use additional fuel additives. In particular, gas station fuel additives, which are unknown, are even more specific to NO.

Actually, as long as we usually refuel at a regular gas station like "two barrels of oil," we periodically use Bigfoot to allow the engine to run at a high speed for a period of time. We regularly maintain and clean up the carbon deposits at the throttle, nozzle, spark plug, etc. The car will maintain a good working condition. After all, health products are good, but physical fitness is fundamental.