Possible reasons:
1. Engine oil is imported at the same time;
2. The viscosity level of the engine oil is incorrect. Viscosity is a multigrade and unique oil. Unique quality oil. It is divided into summer oil and winter oil. You must not make a mistake, otherwise it will seriously damage the engine. Find the empty oil tank and check the viscosity index.
3. The CH level is sufficient, this is not the main reason.
4. If the belt is tight, it will affect the engine. You can turn the belt over by hand. If it cannot be rotated 180 degrees, it means it is stretched more than 180 degrees. 180 degrees means it is loose.
The last suggestion is to go to a regular 4S store to change the oil and filter elements as quickly as possible, and not lose the big one for the small one. By the way, ask them to check the tightness of the belt of theair conditioner.