TouranPassion

I have a Touran type 1T3 with an engine CLCA 2.0L 81 KW and a manual 6 speeds gearbox 02S MAW. This week I noticed a noise as whistling when I put the 6th gear and when returning back to the 5th or lower this whistling gone. Could you please give me the possibles causes related to this issue, becaus...