Low Coolant?

Hello,

Is your engine emitting any white smoke? White smoke is a sign of coolant in the engine oil. When you have coolant in the oil the color of the oil changes to a milky color.

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe

Keep in mind that the coolant can leak from the radiator, radiator cap, water pump housing, thermostat housing, by pass hoses etc.
You might want to do a pressure test to find the leak.
A pressure test puts similar pressure in the system that you will have when the engine is running at operating temperature.
The pressure test can make the leak easier to find.
Make sure the engine is cool before performing a pressure test.

Here is a helpful video of how to perform the pressure test:

https://youtu.be/W8kra65m15c

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

Please let me know of any questions.
Thank you.