Had my thermostat done the other day and noticed the coolant level was just above the min when hot, is the ok or would it be better topped up to max when hot?
You know things expand when they got hot? adding more when its hot would not be the right way around, where does it sit when cold? Did you do the thermostat? or get it done at a garage? if you got it done at a garage, then i am confused why you would not take it back and get them to look at it ?
You've still got air in the system. You loose a bit of coolant when taking the thermostat out. Top it up when it's cold.
Take the cap off, turn the car on and set the heating on full. It will burp the air back into the tank.
Also i didn't realise that there is a vent on the top radiator on the drivers side, its a 1/4 twist thing, it maybe they hadn't bled it properly and it pushing the air out as you drive.