u/Nimplex

title, I've read many mixed opinions on G12/G12+/G12++ based coolants for being acidic. Currently I see "pink/red" coolant in reservoir but I can't exactly tell what type it is. I've looked through forums and people say not to mix coolants so I'm not exactly sure if it's safe to add any pink-ish coolant to fill up to top it up.

My driver side door lock has been replaced a while ago, so I've been using two different keys since then, one for ignition and one for the door. Is it possible to set the lock barrel to a pre-existing key?