no - both carry oil - i knew this - coz i have/had the same issues espec. with the shift linkage cable.
imy first solution was to add some silicon (rtv) on the surface and slip a shrinking (by making it hot) rubber hose over it. i´ve done this about 1 and a half year ago, and it´s still dry till today.
although don´t forget to have a look at the speedo-gear-cable, it could also leak if the seal there is weak.