Good evening.
You have a leak if there is low coolant level.
You need to perform a pressure test to find the leak and repair it.
Do you see any fluid on the ground?
Roy
https://www.2carpros.com/articles/radiator-pressure-test
https://www.2carpros.com/articles/car-is-leaking-coolant
Nov 7, 2018 at 4:42 PM