noisy gearbox

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tonytango

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Hi All..... my Terrano 2.7 R20 has got a noisy gearbox seems to be louder in 4th and 5th somebody mentioned putting a addittive in the box a few different types have been mentioned anybody know of a good one?
regards Tony:augie
 
noisy g/box

thanks clivvy
that was 1 of the suggeted addittive someone said lucas oil stabiliser 1ltr bottle ever heard of it?:confused:
 
From a post I did a while back, information supplied by Richard at Molyslip.



Moly slip gearbox treatmentThe Multiglide is for both manual and automatic trans as well as semiautomatic (tiptronic) as well as limited slip diff.
It just happens to be a fully synthetic detergent rich viscosity improver with anti foaming agents and seal preservatives .It can be mixed with barium based hypoid gear oils, in cases wear there is severe bearing wear and or leaking seals. It is also perfectly suited for MTF applications. (newer trans that use a synthetic Manual Transmission Fluid)
For you needs about 105ml of G in the trans and about 100ml of Multiglide that should quiet the bearings right down and help keep your seals sticky and pliable just in case the bearing wear has stretched the seals any. use another 100 ml of Multiglide in the rear diff as it should be a LSD.
I have the Multiglide in a 250ml so you don't have to buy the 500ml flask. You can just use the G in the trans and it will help but the blend will work better.
You are always welcome to call if you have any questions 9am-9pm everyday on 01327 354 356 All the best, Richard
So far they have had luck with the Multiglide as it remains very sticky even under heaviest stress conditions.
If you catch it earlier and the trans is standard with out over drive then 175ml of Molyslip2001G®
If the whine has already started then the Multiglide is a better choice as it is thicker and stickier. It can also be used in the read diff.
If there is some bearing wear you can mix the G and multiglide now while this won't solve the problem it will buy a lot of time 80,000 miles or so.
The Multiglide will help the compounds in the G o better stick to and bond with the worn bearings.
You would still only want to use the Multiglide in the rear diff.
So far users have come back to saying the noise stopped in a couple severe cases there was even some vibration and the mix of Multi and G cut the whine and vibration.
If there is vibration the the main input shaft bearing is severely worn. Enough to allow the shaft to to move around.
if you plan to do the rear diff, she has an LSD back end so you want to use Multiglide 110ml.
The G should be fine for the trans and one bottle will be more then enough as you will only use about 160ml if you plan to do the rear diff, she has an LSD back end so you want to use Multiglide 110ml.
 
Following on from my previous post, I found these notes that I did when I added molyslip to my gearboxes.

I had a slight whine when I slowed down using the gears approaching junctions, this was what I did.....


20th March 2007
I have now changed the gearbox oil, added 105ml of molyslip G and 100ml of multiglide, I jacked up the passenger side and overfilled by approx 200ml, I took her for a 20 mile drive to get the oil circulating, and 2 days later the gear box noise has reduced by 80% I could not believe it.
Today I did the transfer box, but only added 50ml of G and 50ml of multiglide.
Tip, in order to fill the gearbox and avoid gear oil running down your arm, get a 1 metre length of garden hose with a funnel at one end open the bonnet and thread the hose down the back of the engine, ty-wrap the funnel to the fuel filter hoses then go below and position the pipe into the fill hole, but wedge it up so that the pipe flows down into the gearbox, otherwise the oil will run back along the hose.
Warm the oil container first (in a bucket of hot water) and it goes in a treat.



Wow was it that long ago, nearly 5 years, anyhow, still quiet, still on the same gear oil too. In fact the noise has gone away, I never notice it at all now.... :thumb2
Wife says I am going deaf :doh but I like to call it selective hearing.:lol:lol:lol

If you have excessive wear, the molyslip may not help, but on mine it has been fantastic. I even put a small amount in the power steering too, but NOT rear diff.

I even put some in the wife's Picasso box, and that was 60k miles ago....
As a prevention. Had some left so.....
That was a job to get it in, I eventually removed the top vent.:eek:


Hope this helps.

Best regards,
Rustic
 
:thumb2Cheers Rustic
many thanks that was just what i needed someone with knowledge, the noise is only slight in the box just had new clutch its an 04 plate with 85k your info will help tremendously i had so many people giving me all sorts of ideas that i had to ask in the forum
regards Tony;)
 
Hi all, where is the best lace to buy this stuff?

I want some...

cheers
stephen
 
sounds like lay-shaft bearings, still, the gearboxes can go on for another 20,000 miles or so, mine did until tha 2nd layshaft bearings gave up:doh
 
:doh that was my initial thought so took it to my local garage he took it for a spin and said what i need was more speakers and turn volume up his conclusion was when it breaks you will know what it is that is broke...... lol funny :lol
Tony
 
:thumb2 cheers mate :bow will call you tomorrow if thats ok :eek:
regards Tony:thumbs
 
i plan to do mine this year too. I dont really have any gear box noise worth mentioning, but thats still a good reason to keep it tip top!
 

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