- Aug 23, 2019
- 4,735
- 13,006
So park it, let it run for a while, and then check the reservoir to see if the coolant level has changed?
Yes - starting with a cool engine with the radiator cap removed. It can take a while for the car to get up to temp and for the coolant to start circulating
Just observe the coolant level and your temps as you go. If you see bubbles that means air is escaping. Depending on how long it's been you may just want to flush the entire system and proceed with the steps above
Also when up to temp check to see if your heater blows hot air in the cabin. If not that could indicate bad thermostat