Well sort of getting board of the lack of power so I am gunna put it through a mot next month, then I think its time to move on and look for something different!
^^^ vauxhalls are known for that think they get condensation in them! I would flush the radiator top up with new antifreeze and maybe a new cap! To me just looks like a build up of crap! Also might need a new rad if ur losing water!
I tried to start my car once with the red key but nothing happened ( don't try it thou I was prob just lucky lol). Can't they get the code from the red key?