I recently got a gash in my tire tread. ~1cm long. Horizontal direction. Looks like a crack, not anything gaping or real bad. But it is deep. But not through belt. New tire - only a couple months old. 700 x 25. I took it to the shop, and they said it is fine to ride on.
It is a Conti Gatorskin with a Tuffy liner inside.
Should I leave it be, or fill it so road stuff doesn't get in it? Will filler like Super Glue just break up and grind away in there and cause more wear down deep?
What to use? Super glue, hot rubber? Please advise. Thanks or any help.