Fiona Reid wrote:

My brakes are constantly seizing up snip

With most V-brakes, greasing the mount point doesn't help. When you
remove the brake, you might find that the brake arms pivot not on the
frame, but on a built-in sleeve. If it's hard to actuate the brake
while it's on the bike, but the brake easily pulls off the frame once
you remove the bolts, you have the built-in sleeves. You can pound the
sleeves out and regrease them if you're creative, but it's a pain.
If your brakes truly pivot on the mount point, use whatever grease you
got. It's all the same for these purposes.

-Vee