I have started to notice that my 2010 Rogue has a whining sound when it shifts from 5th to 6th gear, between 2500 to 3000rpm.
Will try to explain it in a better way
When I am driving within city limits, I don't normally cross 80, and there's no whining sound when the RPM moves between 2000 to 4000 RPM.
When I am driving on highway at around 100kmp/h and RPM is under 2500rpm, there is no sound as well. But the moment I hit the pedal (Touch 80+kmp/h) and rpm goes beyond 2500, there is a whining sound until it crosses 3000rpm. Once I go 120+ and the rpm falls back, the sound disappears.
So basically, on speeds above 100+ and if am accelerating b/w 2500-3000rpm, I get a sound.
Was wondering if anyone knows what it could be? I have taken a video of the sound, but cant upload it here.