You must clean your windshield in time. Due to the oil film on the windshield of the car is very common. When we are driving, we come into contact with the oil and dust in the air, and we do not clean it in time and thoroughly, and the residue accumulates on the windshield. When you drive at night or in the rain, it will help you drive. Vision brings a lot of trouble and brings you a lot of safety hazards.