Originally Posted by
JDNSW
This type of tie rod end, if properly constructed, and with undamaged boots, do not need greasing. Providing grease nipples encourages owners to damage the seals and to inject grit by failing to have both the grease nipple and grease gun scrupulously clean. Unlike bits such as universal joints that have a lot of movement (and hence both change a lot in temperature) and have a very small grease reservoir, tie rod ends have relatively little and infrequent movement, a large grease reservoir and usually good seals (on the originals anyway). My conclusion is that unless you operate in an environment where damage to the rubbers is virtually inevitable, I would be reluctant to add grease nipples to good quality tie rod ends, and would be suspicious of ones whose manufacturer thinks they are needed - a clear indication of inadequate seals or poor quality grease used.
John