Calipers rebuilt, still dragging a bit.

[Nobbylad]

Originally Posted by jambo

The issue is the rubber boots that surround both pins. Wherever the grease will come in contact with rubber, a rubber grease should be used.

If you use a copper / LM grease the rubber can absorb is, swelling up in the process. This can mean it wedges the pins, sticking the brakes on.

The pad-retaining pins do not touch a rubber boot, so you can use a little copper slip on them without any concern

Jambo

Yep. ..I use red rubber grease on the seals/pistons but copper slip on the retaining pins and caliper bolts.