Every 600 to 1000 miles.
I have a pneumatic greasegun so job is easy.
When doing the lower nipples I lever up the baseplate/damper blade plate and grease until I see it coming out there.
That way I know enough is in and the plate is lubricated - a tip given by Phil at Allon Whites to me when picking up my first Mog.
Rear springs also sprayed with chain lube at same interval.
Also propshaft.
