What Causes Oil Emulsification in the 4a91 Engine?

[DelBentley]

4a91 engine oil emulsification is primarily caused by the contact of oil with water or water vapor. Here are some additional details: 1. This issue of engine oil emulsification is more commonly encountered in low-temperature regions. 2. The engine also has an important component called the oil-gas separator, whose function is to separate oil and gas. It mainly separates engine oil and some oil vapors, water vapor, etc. Vehicles experiencing oil emulsification have more efficient oil-gas separators, which are more likely to separate water vapor, increasing the likelihood of oil emulsification. Extended Content: The solution to engine oil emulsification is to avoid short-distance driving in winter and to avoid low-speed driving. When engine components do not reach the required temperature in a short time, water vapor is more likely to come into contact with the oil, forming emulsions. After winter, replace the engine oil immediately to avoid moisture in the oil reducing lubrication effectiveness.