I think it is based there now, it doesnt run from the "Old" Dolmus station at all, the new one is the Coach station.
That is last year , things change in Turkey rapido, will ask me mate living in Turg for the latest skinny.
This from my mate Keith in Gumusluk
Yes there are both and from the same place. The bus terminus opposite the petrol station on the traffic lights.
NOT the old bus terminus by the market.
every 30 mins to Gumusluk and every hour to Yalıkavak.