How do you know what to choose for your car?


We often hear customers say: "I am a cute car, and I have always added 95 # oil, 92 # impurities too much, not good for the car." Well, 95 # gasoline is really better than 92 #? Today, we talk about gasoline.

First of all, whether 92# or 95#, the gasoline labeling is not related to cleanliness.

The marking of gasoline determines the detonation point sooner or later. For example, the gasoline number 92# means that it contains 92 isooctane with strong anti-knocking ability, and it also contains 8% of heptane with poor anti-knock ability. The octane level becomes an indicator of the gasoline engine's ability to withstand knocking. In addition to 92# and 95# oils, the other properties such as cleanliness and impurities have nothing to do with this index.

So, in the end should give the car plus a few oil?

The primary criterion for a car's choice of gasoline labeling is the engine's compression ratio. At present, the compression ratio of domestic cars is generally more than 9, generally the fuel number of luxury models are 95 # oil, such as the BMW 7 Series, Porsche, etc., but there are also some senior mid-size cars are also recommended to add 95 # oil, such as the Audi A4; Compact cars are generally recommended to add 92 # oil, such as Buick Excelle and Dongfeng Peugeot 308 and so on. The automobile manufacturer is based on the gasoline number recommended by the compression ratio, so it can be recommended by the manufacturer.

What if you add gasoline with an inapplicable label?

When a high compression ratio engine uses a low-grade oil, knocking may occur. The engine will knock for a long time and it will damage the engine and even damage the piston and cylinder. The use of high-grade oil for engines with low compression ratios will result in “delayed combustion”, that is, when the pressure is low, it is less than the optimal combustion point, and incomplete combustion occurs. It is wasteful and easy to form carbon deposits, which is not good for the engine.

If manufacturers recommend more than 95 #, occasionally add 92 # oil, it does not matter?

In fact, everyone can rest assured that the car is not so delicate, and occasionally adding oil that does not apply the label will not have any serious problems. The above-mentioned hazards of adding the wrong oil will only appear in long-term use.

Does the vehicle need to add gasoline additives?

We all know that gasoline must be mixed with air to burn, and the thermal efficiency of the engine is only 20-30, that is, only a small part of the gasoline is converted into kinetic energy after combustion. Gasoline impurities that cannot be fully burned form carbon deposits and adhere to the engine's inner wall, spark plugs, intake valves, exhaust valves, and fuel injection nozzles. Carbon deposits are similar to sponges, sponges absorb water, carbon deposits absorb gasoline, and too much carbon deposition can cause knocking, knocking, insufficient combustion, etc. These phenomena will result in increased fuel consumption of the vehicle and poor engine operating conditions. Therefore, after the vehicle is used for a long time, some additional additives may be added to dissolve the carbon deposit and protect the engine. However, at present, there are a variety of additive markets. When choosing a car, the owner still needs to buy it from a regular source. The function is to improve fuel quality, remove water, clean up carbon, increase octane number, reduce emissions, and promote combustion.


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