My toilet is leaking. I hear the leaking noise and sometimes I can even hear the filling valve being triggered when the level of water in the cistern becomes too low.
After investigating a little bit and cleaning the cistern and flapper valve I decided that probably I better replace the whole flush valve than just the flapper valve.
My toilet is a Kohler, and maybe an old model. I checked online to buy another flush valve, but what I see on the Internet does not like the flush valve I have right now. When I asked in the hardware store about buying new pieces to replace the old ones I was told that for this model (Kohler) I better use the house parts. Still, I can find online other products that say "fits Kohler".
Should I replace my toilet parts with the more expensive Kohler ones or can I try other brands?