Originally Posted By: Olas
I've done countless brake jobs in my lifetime, certainly in the hundreds and most probably into the thousands and copper grease has not once been an issue even with loyal customers that come back again and again where I've been under their car regularly over the years that they owned it.
Ditto, never ever seen a problem using copper coat, some customers cars I've maybe put in 3 or 4 sets of pads, never seen an issue. But for the OP, I was rebuilding some Aussie trailer calipers a few weeks ago, and the instructions (yes, I do read them) said to use only rubber grease, and they had rubber grease on the pins...I didn't.