Yesterday, just because it was a nice day for the first time in months, I couldn't resist the urge to fiddle with my car. Just for the hell of it, I cleaned the ICV, since I've heard of people doing that. Made a huge difference! Idles much lower when hot (it was idling at about 1100-1200 hot in P and N, now about 700-750), smoother transmission engagement too.

So here's my question: Are there any other either really cheap or free quick fixes or improvements you can do like this to make a difference? Anything else to clean gunk out of?

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'86 420SE Euro
904 Midnight Blue, Gray Velour
Dad bought it new, now I own it.

"A Mercedes-Benz is like a fine wine, it only gets better with age."