Losing coolant and at boiling temperature the reservoir

Hello,

It sounds like your engine might be overheating.

When you get the overheated coolant on the reservoir, where does the temperature show on the gauge?

Have a look this article, it goes thru the typical overheating issues:

https://www.2carpros.com/articles/symptoms-of-an-overheating-engine

One of most common issues for overheating is a stuck closed thermostat. When this happens it won't allow the coolant to flow through the engine and can back up the coolant to the reservoir.

https://www.2carpros.com/articles/how-an-engine-thermostat-works

Please let me know what you are experiencing.
Thank you.