Coolant leak

Hello, I'm Danny.

Have you noticed any loss of coolant in the overflow bottle? It's possible that it is coolant from before that remains from the prior leak.Coolant will never evaporate. I would suggest performing a cooling system test.It pressurizes the system without the engine running and shows anything that leaks.If you don't have access to a tester most local auto parts stores have a tool loaner program and can rent you one.Here is a tutorial showing what is involved:

https://www.2carpros.com/articles/radiator-pressure-test

Hope this helps and thanks for using 2CarPros