What to Do When There is Fog on the Outside of the Windshield?

[DiKaleb]

Here are the methods to deal with fog on the outside of the windshield: 1. Use the car's built-in air conditioning system by turning on the fan and the cooling switch. The cold air will disperse the fog on the windshield. 2. Open the windows to allow the exchange of hot and cold air. Crack open the side windows slightly to promote air circulation inside the car, bringing the interior temperature closer to the outside temperature, which will help the fog dissipate. 3. Use specialized anti-fog products. Spray them evenly on the windows and wipe them clean to form a transparent protective film on the glass, preventing fog formation. 4. Use dishwashing liquid with a dry cloth. Mix dishwashing liquid with water, apply it evenly on the car glass with a sponge, and wipe it clean with a car towel once dry. This method leaves no watermarks and can effectively prevent fog for up to 20 hours.

[OMaci]

I've been driving for over 20 years and what annoys me most is windshield fogging on rainy days. Actually, it's quite simple - just adjust the AC vents to direct airflow to the windshield mode and turn it to maximum fan speed. If it's cold outside, set the temperature close to the outdoor temperature to minimize the temperature difference between inside and outside the glass, preventing fog formation. Using wipers will clear it right away, but avoid using washer fluid as it'll just make it blurrier. When parking, remember to turn off the AC and open windows slightly to let moisture escape, preventing the issue next time you drive. This method also works for foggy side mirrors - maintaining clear visibility is what matters most.