The worst is when the old lube mixes with road grit into this nasty grinding paste. It basically turns your chain into sandpaper that wears everything down faster. Just wipe it down with a rag and some degreaser first, it takes two minutes.

Think my tools are older than yours, @gavinj48?

Actually letting it cool too much just makes your work take forever.

Used to think it was a waste of time. Now I see we're throwing money away and hurting the planet.