Ji Li Yuan Jing nuan feng shui Guan installing

Hello! Even without a thermostat, it can be used. However, it is best to install. Thermostat is the configuration that enables the engine to reach the optimal working temperature of the engine as soon as possible. Failure to install it will affect fuel consumption and heating. I hope I can help you. Have a nice trip! If there is something wrong with the car, ask the car master. 4S shop professional technician, 10 minutes to solve.