safe is boring lol
not sure if i was much help but i dont mind trying to help when someone is listening and not being an ahole. im no honda guru but ive been wrenching for a while and most problems it doesn't matter the make. your same problem and hopeful solution can happen to all cars. a few cars actually have a bleeder you can use at the highest point in the coolant system.

 

I'll remember that tip about the bleeder thanks. Yeah I'm always willing to listen cuz I know a little but I'm by no means a pro mechanic.