Damn, that sucks. I'm pretty new to a lot of car maintinance myself but i'm still confused by many people saying this is no big deal and to pretty much ignore it. Are you guys saying that this will never go deeper and weaken the metal over time?
I think i'll do the fluid film as a short term...
I was actually roaming around the back earlier today and saw these and thought they might be speakers too lol, I said i'll look into it later and just so happen to stumble on this thread.