Originally Posted by
j814wong
Thanks for the suggestion. I think my bike does have a screw on cable guide but am not certain so I'll take a look at that later.
I'm sure caulk would work well but I would prefer a less permanent solution. Your idea makes me think of using electrical tape in that spot.
The Silicone caulk comes off easily enough, but if you want something completely temporary, use some stiff grease. The best for this application is water pump grease which as it's name implies is formulated to be very water resistant. You simply work it in and around than wipe off the excess leaving a fillit in the corners. The only drawback of the grease vs. the caulk is that it adheres dirt so you get a black line in the corner, and will get scrubbed out of the slot over time, so needs to be repeated from time to time.
Tape will make a visible ugly job and probably won't work nearly as well, so keep it simple with the grease.