Coolant low when driving for a while but when turn off levels go back to normal

[wazzabie]

If nothing is done will the air pocket in the coolant eventually work it way out?

 

[OR VietVet]

If nothing is done will the air pocket in the coolant eventually work it way out?

Yes

 

[ladorn45]

So I ended up doing as suggested and ran the engine with cap off and squeezing the tube's. That seemed to help. I also did a pressure test and the pressure held for then then 20 mins and I did not see any leaks anywhere.