oil temp gauge for air cooled vw

• 2022-05-27

Normal temperature: 15~45 ° C

According to the principle of refrigeration system, the low-temperature and low-pressure liquid refrigerant exchanges heat with the surrounding water in the evaporator. The evaporator absorbs the heat of oil and evaporates into a low-temperature and low-pressure gaseous state. The temperature of the refrigerant remains unchanged during the evaporation process. The low-temperature and low-pressure gaseous refrigerant enters the compressor, is compressed into a high-temperature and high-pressure gaseous state by the compressor, and then enters the condenser, where it exchanges heat with the indoor medium, Part of the heat of high-temperature and high-pressure gaseous state is absorbed by the medium, the medium temperature rises, the refrigerant releases heat, and the condenser becomes a high-temperature and high-pressure liquid. The process temperature of the condenser remains unchanged, and then enters the expansion valve for throttling. Throttling is a process of rapid cooling, and the refrigerant becomes a low-temperature and low-pressure liquid. After this process, the refrigerant enters the evaporator for heat exchange and evaporation, so as to realize the whole process of the refrigeration system. This cycle is continuous, Oil can be continuously cooled.

1. The temperature of VW oil is 90-120 ℃. The normal operating temperature of the engine oil is generally 90-120 ° C, which is higher in some parts, but generally does not exceed the water temperature. In addition, the speed is fast, and the temperature will be relatively higher, reaching about 100 ° -110 ° C. However, if there is a long-term trend of exceeding 120 ° C, it should be checked.

2. The fault of high oil temperature is a comprehensive fault. Mainly look at several aspects: check whether the oil quantity is enough, whether the oil is deteriorated or too many impurities; Whether the water tank leaks; Whether the electronic fan works abnormally; Whether the thermostat works normally; Is the antifreeze not circulating smoothly; Whether the sensor is false alarm; Whether the piston ring seal is well sealed.

3. The engine oil generally starts with s, such as se, SF, SG, SJ, SL, etc. the English characters after s become higher and higher. The requirements of advanced engine oil for engine may not be specified, and it can be basically used on any engine. However, low-grade engine oil can not be used on engines that are strict with fuel, because it is easy to cause engine wear and even damage.

4. Different brands of the same oil can be mixed temporarily, but do not mix for a long time. However, it is worth noting that oils of different brands and specifications should not be mixed, because different engine oil additives have different components, which are easy to form sediment when mixed together, which is detrimental to engine lubrication.