what do you mean by the appropriate amount of water wetter?
I think I'm going to get my cooling system flushed this week, maybe I'll ask them to fill it up with like... 20/80 antifreeze/water
and add some Water Wetter...

I know why my 230E is rather cool running even though the temperature in Jakarta is always around 98F.... I filled the system up with mostly water...and a bit of anti-freeze/corrosion inhibitor.

I also remember my dad getting REALLY frustrated with his W123 280E.... his solution to overheating was putting more and more anti-freeze... :p oh well...

I've also heard of this Autozone thermostat... if it ever overheats then I'll do that. For now I think it's normal.

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2008 BMW 335i Coupe