Originally Posted by
DannoXYZ
Wrap 2-4 layers of plumbing teflon tape around the cups before installing. This will help prevent galling, corrosion and creaks.
Also lube the crankarm-bolts before installing them.
In my case I've been installing Al BBs into a Ti frame but this is 100%. Tried greasing the threads first - creak creak creak. Replaced grease with teflon tape - silent. I also recommend teflon tape around pedal threads but it's not strictly necessary here.
Greasing or oiling the crankarm bolts helps get an even tension to torque relationship.