But im wondering tat if is a bearing sound it should be heard all the time,rite??

front Bearing.. loaded up when Accel, no load on decell, or in 4th.

In my case,i heard the sound at normal cruising n accelerating.
But it goes off when decelerating or engine braking..

If it's only there during steady state cruising, and no sound while accelerating or decelerating, it could simply be gear noise. Possibly it won't get any worse, will just be noisy from now on. A former owner may have run it with low gear oil, or fitted a mismatched gear pair.

Unless it is vibrating.

Coz when i deacc or engine braking n the sound goes off...

Yeah maybe? If there is enough load?? accelorating probly produces more load.

U mean like im goin down hill n using engine braking,the counter shaft will still hv the sound??

But the is only load on the counter shaft when accelorating or useing the gears to decelorate. witch is when it is load enough for you to hear..

I juz replace the oil+treatment d...
But the sound is still there...
If bearing sound,the sound should be constant without being effected by acc or deacc....
Tats is only my opinion...

Its what those guy sed.. Its just because its under far more load when the throtle is open.