Steering Column leaking on 2002 Nissan Altima

What can I do to resolve a leaking steering column. My mechanic has put a conditioner into the reservoir, but it still leaks.

Asked by for the 2002 Nissan Altima
i assume you are talking about the power steering.
sealers are never good. they swell seals that may or may not stop leaking. it also destroys the seals over time and adds to the needed repairs.
you need to have the leak repaired properly.