Coolant coming from the radiator reservoir?

First thing is to never add a sealant to the cooling system, 99% of them cause more problems than they claim to solve because they have a bad habit of plugging coolant passages in the heater core and radiator. As to your issue, when you say it overheated, was it steaming and spraying coolant or had a light on saying it was hot? I assume you added coolant? Was it actually a cold engine and low coolant when you added it? Not sure what would cause a humming sound other than possibly the cooling fans.
My first thing would be to do a cooling system drain, flush and refill. On that vehicle Ford recommends you use a vacuum filling process though because you can get air pockets trapped in the engine using a conventional fill method. This will give you an idea of the basic process.

https://www.2carpros.com/articles/coolant-flush-and-refill-all-cars

This video shows the vacuum filling process:

https://www.youtube.com/watch?v=_WCRcuCZI50

Hello RLHARRIS83,

The absolute thing I would do first is a coolant pressure test. This will show if you are losing coolant externally or internally. I am adding an article for you to help aid in doing this test. I will also add a picture of the tester.

Here is the article:
https://www.2carpros.com/articles/radiator-pressure-test

When conducting this test, pump it up to what is on your radiator cap. Yours should be 16 psi. If you don't not see any external leaks, leave the test tester on for about a half an hour and come back and see if the needle has moved. If so, this could indicate an internal leak.

*Whatever you do please do not put any sealant in the cooling system. It will cause all types of issues and cause you to have to spend a lot of money replacing water pump, radiator, heater core. Please avoid using this.*

Also, if you can, try not to drive it as it can warp the heads or destroy the engine which will cause a costly repair as well.

Thank you,
Brendon