Coolant disappearing. Still

[Scotty]

Chevy sonic 2013 RS 1.4L
Changed the coolant housing due to blown seal
Changed the thermostat and water pump
No visible leaks
Put stop leak and has stoped overheating but my coolant reservoir is still very low. Also when I crack the radiator bleed valve, nothing comes out. Ruled out head gasket. No coolant in my oil or white smoke out the tail pipe. Anything I’m missing???

 

[logandsawman]

I top off to the full cold then see what happens. There could have been air in there.

If you are not getting coolant in the oil and no visible leak it must be a leaky exhaust manifold gasket. Or a pin hole somewhere it evaporates.

let us know

Dave

 

[LilRedLtz]

My first sonic would drip at the elbow connector for the heater going into the firewall. When the car has cooled down run your fingers around the bottom where it connects. The other area could be the bottom of the coolant resivoir being cracked from old age. Run your hand across the bottom and see if it is wet. Other than that i'd say look around the lower area of the radiator/engine area from above with a flash light for wet looking spots. I've replace my coolant outlet and thermostat housing with aluminum ones and my coolan resivoir all due to the plastic getting brittle with the heat and age.