I can remember seeing Datsun cars with plastic plugs screwed into the base of the track rod ends in the early 70`s. The plastic plugs could be removed exposing a pre threaded hole that accepted a grease nipple... I had a few Datsuns, and neither greased or required to replace a track rod end on one... Recently replaced what I imagine were the original track rod ends on my mid 80`s +8 at circa 30k miles as the result of the boot having cracked with age..No obvious wear in the track rod joints.
