[VIP第7年] 指数:7
通过认证 
The thermostat must be kept in good working condition, otherwise it will seriously affect the normal operation of the engine. If the thermostat is opened (here all refers to the thermostat main valve) too late or even can not be opened, it will cause the engine to overheat; Open too early, the engine preheating time is extended, the engine temperature is too low.
