Performance Pack Diff Questions

[Jackie Treehorn]

Hi

I wondered if someone could answer a couple of questions on the PP Diff.  I am waiting for my car (another 4 weeks approx) and the PP diff seems to raise some questions that i haven't seen answers to on forums.

1:Does it need any maintenance long term? I have seen how it works, but not sure if the gearbox oil lubricates it, and whether the gearbox oil is different to non PP because of this LSD system?  Is it wise to change at 30k intervals for example?

2:Also, this may seem stupid but if I permanently leave the diff in "sport" or "on"  does this mean it will effectively wear out as it is a clutch based diff that may require long term rebuilds?  (bit alarmist but just asking) 

3: like #2 - What are you thoughts on whether it should be used sparingly instead of on the daily commute? Not that it will be driven hard on the commute, but should it be switched off when not having fun?


I know its a lot of questions, thanks in advance...

[mikeok]

Hi
1. Not sure sorry
2. The diff is always on and sport mode just does the dampers and changes the gear box to sport if dsg box.
I think they are pretty robust as I have driven my one hard and love it..just enjoy.
Mike

[mikeok]

3. Same as 2 really

[Jimble]

Hi
1. Not sure sorry
2. The diff is always on and sport mode just does the dampers and changes the gear box to sport if dsg box.
I think they are pretty robust as I have driven my one hard and love it..just enjoy.
Mike

Gotta be honest i'm not sure what difference it makes but the diff has it's own "sport" setting in individual mode separate to the  dampers and engine.

[mikeok]

Ok was not aware of that..thanks

[Jackie Treehorn]

thanks all, I thought it might be tough to answer something that seems pretty new to the VW market, but like clutch plate diffs on other cars I have read, some need maintenance, also some BMW cars with LSD need a different oil to open diff models, so wondered whether it might be the same on the VW?

I planned to replaced the diff oil on my BMW every 3 years or 25K so just wondered what might be a suitable long term process to follow for this type of Diff, without any online handbook i'm not sure...

I thought the diff is off when in normal mode and the car uses the XDS system, but when nt "Sport" mode, or the individual "sport" mode for the diff, the diff becomes active?  Either way i guess it will be fine for long term active use

See below.  @ 1.05 for diff setting

https://www.youtube.com/watch?v=dIETxZLoA_Y 

[Mr Savage]

Mines stayed in sport mode pretty much from when I've bought it and been driven hard for many of it's 9000 miles. I can't imagine any issues arising with the LSD.

VW would certainly make a point to tell you if this was the case.

[andygo]

Not sure VW would tell you that its going to wear out if used hard. Hardly a selling point is it?

As a guide, read up on TSi cam chain tensioners....

[Jackie Treehorn]

I Understand things wear out, just not sure if this is an item that i should leave on all the time.  If its hydraulically controlled, is the hydraulic fluid changeable?  if separate from gearbox?

BMW diffs on some models are "lifetime fill" but that only means life time of the available warranty, and as they have a fill plug, i have drained and refilled before to change out the old fluid after 25K.  Same with PS fluid after 60k on the last couple of cars (Porsche,Audi) , nothing is lifetime fill with the amount of abuse hydraulic, diff or gearbox fluid takes (IMO of course)

[CraigW]

I doubt the diff is going to be worked that hard in every day driving unless your driving like an idiot round corners at 90mph every where you go.