brake paste/grease/fluid for reassembly

[Brett Dikeman]

Folks,

I'm putting the calipers back together, and curious...Bentley says
"use Audi PN blah blah grease on orings and pistons for reassembly"
etc.

Uh, okay.

Wouldn't brake fluid do just as nicely?  Or is the idea to have
something non-hygroscopic near the outer surfaces?  Would regular
synthetic general purpose grease do?(got a big tube of M1 synthetic
"general purpose" grease, good to 550 degrees or something.)

Brett
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