How to check the vehicle's coolant

pu1. If the coolant is boiling, it looks like the radiator is broken

2017-12-20

OK

pu2. There's a temperature sensor pen clutch in the radiator, and I think it's broken

2017-12-20

OK

pu3. 1 Thermostat 2 Radiator Blockage or Breakage 3 Head Crack Need to be checked in this order. Number 1 is the cheapest and number 3 is the most expensive, but when you go to the repair shop, you have to start with number 3, so check it carefully

2017-12-20

OK