Quieting down a noisy gearbox

[fh2014]

Yes I know it's going to grenade itself but what's everyone recommend to try and make it die quietly? And perhaps a little slower?

The Terrano box was alright then I replaced the oil with cheap stuff and now it's quite noisy. Shifted into second sweet before the change and now it's quite notchy

[Crash bandicoot]

I replaced the oil with cheap stuff and now it's quite noisy

might be a clue.

[johnny262]

A peeled banana in the filler hole oh wait thats only if you wanna sell it right?

[fh2014]

hahaha , no im not selling it, just not looking forward to finding a replacement

any oil recommendations crash or is there and additive i can use? i bought the cheapest because people saying oils all the same

[Ralfie]

Not all oils are the same.
Did you put in the correct type, rating and velocity oil that is recommended for the gearbox?
When you drained the oil was there a lot of filings on the magnetic bung? Should be some but more than expected or 'larger' bits.

I would get the correct and a good quality oil in there and see how it goes.

[fh2014]

yea right type gl4 5.0L 80w90

magnet was okay just small fillings

[Crash bandicoot]

According to the factory technicians manual

API-GL*1 non EP. for the 4wd fs5w71C 4 litres and fs5R30A 3.6 litres, but that was at factory So dont forget the advisory saying to add more via the gearshifter...

Apparently the semi/synthetic eats the softmetals used in the gearbox

[Clint]

I've had good results with Castrol VMX for quietening down gearboxes & improving shifting.

Cheers
Clint

[tallsam66]

I use Nulon 83W-140 from supercheap ... got it in both diffs ... quiets down my auto locker ... so prob be good for noisy gear box too .... around $50 for 4 litres