I always put a little copper grease on the back of the wheel, had too many wheels bond themselves to the disk.
What you must never do is put a layer of the stuff on the hub before fitting a new disk, it used to be "the norm" but modern braking systems have so little lateral movement in them that the slightest bit there tends to cause disk runout, which turns into uneven wear - causing a pulsing at the pedal.
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2023 V60 B3 Core with Blonde Leather. Made on a Friday afternoon from bits of ticky-tacky.
Before: 2019 V60 D4 Inscription Manual ran to 105k miles. 2015 V70 D3 5 Cyl ran to 93k. 2010 V50 1.6D DrivE ran to 87k, bit fragile.
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