I was chatting to a Tackle store dude the other day and he said he sprays his line roller bearing after every session.
I do it slightly less than that
Basically I only used to do it if I noticed a speak but by then the damage is done
But I think I'm going to start doing it more often.
(p.s. I know BG's dont have line roller bearings but I'd already just done every other reel I own before remembering to take a photo
)