Ah, I am kinda teasing, and the topic has been covered time and again, BUT for the newbies here... I wanted to repeat the MANY MERITS of greasing most all brake parts (so it seems, paradoxical?) except the face of the pads and the rotors (where they meet).

Why? Because I lay on the hard ground in the hot sun for too many hours yesterday helping a friend with her 1987 245, well-salted by Minnesota winters.

First, the brake pads were desperate hard to get out (bang, curse, lever, pBlast soak, hit, pry, etc.)

More importantly, the brakes didn't work right over the last months or years because one set of pads was kinda frozen in place. From deep rust. The guy who last worked on them just obviously had NOT greased:
o the slider or guide pins, on which the pads must move
o the several faces inside the calipers against which the pads are held
o the back of the pads, which bear against the pistons

Prevent rust. Promote smooth action. Grease. SilGlyde or similar.

And keep out of the sun?

Good luck!
--
Gregg in MN