The engine is a big lump of metal and can retain heat quite a long time ,like an oil filled storage heater.
If your level is just above minimum and never drops further everything is probably fine.
General discussion on line will tend to be cautious because if you are indeed leaking engine coolant and its ignored the consequences can be expensive. Its a good idea to check your coolant level occasionally anyway. It should stay the same. Check its when its cold before a trip, as the level may change as coolant temperature rises and falls. You shouldnt actually 'consume' coolant , like you might with engine oil, except maybe a tiny amount over many years .But it can deteriorate so service plans normally recommend draining and refilling coolant occasionally. If you dont know when it was last changed and your car is of an age and mileage when it might be due, consider including it when your next service is due. It might be included as part of a bigger service needed at that interval, or it might be an extra cost option.
- But check what is the correct level in the owners handbook. The correct level sometimes looks to be lower than you might expect.It needs some space to expand when it gets hot. People sometimes top it up and overfill it. But this excess may be vented out onto the road when the system gets hot ,and the level again drops to the correct level. This may be mistaken for a leak, and they top it up again, and again.
