What should I do if the car engine is loud? What kind of lubricating oil works well?

According to your description, if you use inferior fuel, the combustion in the engine will get worse, which will make the engine vibrate violently and make noise. Solution: In this case, the engine noise can be reduced by replacing the fuel with better quality.

5W-30 can be used all over synthetic engine oil, such as Shell Extraordinary Heineken Series, which is suitable for most luxury cars, turbocharged models and high-performance sports cars. Among them, Shell Extraordinary Heineken Ultra R focuses on sports performance, and some high-performance sports cars or models that focus on sports performance can try this lubricant; Shell Extraordinary Heineken Ultra E pays attention to economy and environmental protection, and values the performance of these two lubricants.

During maintenance, if all synthetic engine oil is used, 10000 km should be considered for maintenance once; if semi-synthetic engine oil is used, the oil should be changed at 7500 km; if mineral oil is used, the oil should be changed at 5000 km.

Mobil focuses on power and long-term, Shell focuses on engine cleaning and silencing, and Castrol focuses on engine protection.

Shell engine oil is selected from original engine oil manufacturers: GM, Dongfeng Nissan, Changan Automobile, etc.

Hope to adopt! !