Before installing Farah capacitor, after the water temperature of hot car is normal, the voltage is generally 14. 1v, jumping back and forth by 0. 1v, and the instantaneous fuel consumption of N gear is 0.5l hour. After the capacitor is installed, the instantaneous oil consumption of N gear is 0.4l after the hot car water temperature is normal, and the voltage is like this. The voltage drops from 14v to 664 from time to time.