How long to wait to top up coolant?

Top up coolant? You can easily add this yourself. When your car is leaking coolant, it is more common that you need to top it up. It is advisable not to top up the coolant immediately while the engine is still warm. So proceed with caution and make sure that you let the car stand still for a while and cool down. The coolant temperature can rise significantly when the engine is running. It can therefore be dangerous to top it up while the engine is still warm. We advise to wait at least 15 to 20 minutes, provided the engine is cold, then you can add it immediately of course.

Conclusion: It is best to wait 15 to 20 minutes to top up the coolant. So take plenty of time to do this and choose a safe place at a gas station, home or parking lot.