How about Chen Gong s talk about the EVIL engine oil of the car? 5

The importance of motor oil to the car is self-evident, without it, the car engine will suffer serious damage, making it difficult for the car to move an inch. Engine oil is not only responsible for lubrication, it also has the functions of cooling, cleaning, vibration damping, sealing, etc. At present, the oil grades on the market are intricate, often so that car owners do not know how to choose, in fact, there are only two main indicators of engine oil, figure out the specific meaning, on the line.

The viscosity index is classified according to the SAE method, and there are 6 kinds of oil for winter, 5 kinds of oil for summer, and 16 kinds of general oil for winter and summer. Winter oil grades: OW, 5W, 10W, 15W, 20W, 25W.

The symbol W represents winter, the smaller the number before W, the smaller its low temperature viscosity, the better the low temperature fluidity, and the lower the applicable minimum temperature. Summer oil grade, 60. The higher the number, the greater its viscosity and the higher the applicable maximum temperature.

Winter and summer general oil grade: 5w w w w w The smaller the number for the winter portion and the larger the number for the summer portion, the larger the applicable temperature range.

According to the API quality classification method, engine oil is divided into gasoline engine oil series (i.e. S series) and diesel engine oil system (i.e. C series), and the oil products of each series are arranged in alphabetical order (A, B, C, D, E, F), and are divided into several levels. Selection method: The logo on the outer packaging of engine oil currently sold on the market consists of two parts: SAE viscosity classification level and API quality classification level. It usually starts with SAE and is followed by a viscosity code; The engine oil label classified by API quality generally omits the API and directly marks the quality grade code.

For example, the designation SAE10WSD indicates a winter gasoline engine oil with a viscosity classification of SAE10W and a quality level of API SD; The designation SAE30SD indicates the viscosity classification SAE30, and the quality grade is APE SD for summer gasoline engine oil; The label is SAE10W 30SD (or SAE10W 30SD), which indicates that the viscosity classification is to meet both SAE10W and SAE30 winter and summer general purpose gasoline engine oil, and its quality grade is API SD grade. When choosing a motor oil, fans can combine the local maximum and minimum temperatures and refer to the car's "User Manual". If you choose an oil that is too viscous, it will increase the resistance to movement and consume engine power; If you choose an oil with too little viscosity, the lubrication quality cannot be guaranteed, and it will aggravate the wear of the engine.

For engines that have been seriously worn and the gaps between the fittings are large, a higher viscosity oil can be used to strengthen the sealing performance of the fittings.

This Chen Gong Liaoche sells miscellaneous engine oil from small domestic factories, with poor quality and high profits, and you can buy well-known brands of engine oil with the same money.

Chen Gong's engine oil is all real engine oil, at least it will not damage the engine.

For such troubles, it is recommended that you go to a repair shop or 4S shop for help.

Now there are many brands of engine oil, but the main thing is that Meijia shell is used more, and it is also a big brand.

I've been repairing the car for 13 years and heard for the first time that this kind of guided consumption is too much, don't blindly believe it.