I have whine noise from gear box in 2nd gear 3rd gear and 4 th gear it still makes noise when free wheeling 2 but not as bad can u help

Gear oil won't make the humming noise, lack of it will. Depending on type of vehicle you're talking about.

manual transmission
indicates counter shaft bearing or clutch shaft input bearing failing
reasoning is that for those gears the load is transmitted across to the counter shaft placing a side load on the bearings while 4 gear ( not really a gear ratio) is direct connection from input shaft to out put shaft and removes the load from those bearings
the noise is actually from the gears coming slightly off the proper pitch contact of the teeth from the bearings failing

noise in 2nd gear which is in the main box indicates a chipped tooth or problem teeth on the lay shaft or synchro dog in the box. Check the magnetic plug of the box and if there is metal evident then the box will need repair.

check the drain plug magnet for metal bits . If any the box has to come out 4.th gear is straight shaft connection and 5 gear connects from the cluster shaft up to the out put shaft . On either side is a rear main bearing and from your description if that bearing is failed then the 4th gear syncro will not align properly and the gear for 5th will be out of alignment so the syncro to work will not work

sound like sincro gon in box u can get them recond at mr gearbox or cheeper 2 get sechand gear box

Time for a complete rebuild of trans

Any slipping & you continue to drive it,
you ruin it,your done

If the noise happens when car is in park and you rev it to about 1500rpm's then its thebearing in the oil pump of the torque converter.It should make noise all the time even in park ideling. You may need a rebuild transmission. Have the vehicle checked out at a transmission repair shop

The gearbox normally shifts like this in "D":

1st gear to 2nd gear

2nd gear to 3rd gear

3rd gear to OverDrive

If you have the selector in "2", it will not make the final 2 shifts. "2" is nice for descending very steepo hills slowly, and also is nice to use coming down hills when it is icy/snowy, the engine will slow down in "2", and you will not have to depress the brake pedal.

hi my name is nathan .......now...... what it sounds like is #1 (I have to hold it in place til I get to second gear) that can be that your shift linkage is worn or out of adjustment,pilot bushing is Badly worn,shift fork,lever and or shaft is bent or worn,or your bell housing is misaligned or just loose...i have a few more ideas on why it is jumping out but those are the main ones now about your whining gear noise#2( The whining sound starts low pitched in each gear then gets higher pitched as the rev's increase) you may have worn gears maybe or it could be just that your transmission lubricant is incorrect or inadequate.

Well, you say the noise is in 1st, 2nd, 3rd, and 5th, and I assume this is an overdrive tranny with the overdrive in 5th.

This means your 4th gear is more than probably direct (1:1) ratio.

Meaning you have a bad countershaft bearing(s), or gears...

In direct, your countershaft still spins but carries no power/torque to the wheels (it is basically just freewheeling), input shaft speed/torque goes directly/is locked to the output shaft, so you don't hear the noise; in any other gear, where the countershaft bears a load, you hear the bad bearing or gears.

Either way your tranny has serious internal issues and needs to be rebuilt before it destroys itself.