gu vibration

'Also if you dont do much off road stuff then oil dose not get into the areas of the diff that it needs to because your not working it.'

john...I find that statement hard to believe. I that what Nissan told you?

If the oil does not get to all places in the diff then there is something drastically wrong with the system. I can believe that the oil loses viscosity and hence the vibration. At least you have solved that problem.

Cheers,
Willie

Never a dull moment

Couldn't agree more...
You pull enough G's (acceleration, braking & cornering) to get the oil everywhere, and besides, a large percentage of 4WDs never go off road. If someone is stupid enough to make such a suggestion then I would treat everything he says with GREAT suspicion. IMHO
Sorry, though, know of a number of GUs that have no such problems with the vibration (or anything else!!!) so can't help you there. Not helpful I know. Cheers

Hmmm, had a similar problem with our new work ute V6 rodeo (one of many problems!!) it had a chronic diff shudder and was basically operating as a fully locked diff most of the time, numerous dealer visits later, still no joy. So i took a wander down the warehouse here at work and grabbed some fully synthetic 75 / 140 lsd oil and changed it myself. Well at 8900 km the diff oil was filthy black with heaps of iron and brass content visible. Drove the ute about 10km and hey presto problem solved, now smooth as, and quiet as a mouse. As a matter of interest i submitted a sample of the old oil to our lab for anaylasis and they found that as well as the high contamination present, they couldn't identify the viscosity of the oil, their best guess was that it a blend of two or more types and grades of oil. I have asked the manufacturer of said vehicle to please explain why the oil fitted was not as per the service schedule and specs.. Still Waiting (surprise surprise)

Lesson one do not take their word for the quality of the lubes they use. and change diff oils at 40 / 50 km .

As for the vibe, if it is the exhaust pulsing with the torque of the engine, get down to a good exhaust shop and get a high quality flex joint fitted as far forward in the pipe as you can. and check the condition of the hangar rubbers.. cheers Brad.Life is short- but there's always time for a yarda.

John

Have you had the automatic belt pre-tensioner checked??? This could be your problem at low revs if its not working properly.

Has been a known problem and will be fixed under warranty.

cheers