Gearbox noise 2011 forester.

[Subykun]

I have had my 2011 forester diesel manual for a month now.. I have noticed a slight whining noise almost like a radio out of tune? in all gears, goes away on exceleration seems present when going along steady and slowing down and stops when clutch is in! 

anyone got any ideas?

[Mr B]

Does it do it with vehicle stationary with clutch out ?

open drivers door and check noise with clutch out and clutch in and blip throttle to see if can effect it .

Have you checked gearbox and diff oils since you had it ?

 

[Subykun]

Thank you Mr B.  no noise when stationary! clutch in or out when stopped nothing. 

when going along in 4th/5th at around 30 to 50 its noticeable , sounds almost like a radio out of tune and it slowly disappears when I go faster but not there standing stil.. as it was serviced when I bought ive only checked the engine oil..

[Mr B]

Might be advisable check/change gearbox/diff oil.

Sounds like gear teeth or bearing issue, possibly teeth meshing if here it more on over run/ gets loader at moment you lift off throttle .

Some noises are improved with better gear oil or if oil level low fill it right up to max .

Noises hard advise accurately without actually hearing it .

what the vehicle history ? high miles, likely been towing ??