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Gearbox oil change vs flush advice please?
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stick
 


Member Since: 13 Jan 2010
Location: hants
Posts: 592

United Kingdom 2010 LR4 3.0 TDV6 HSE Auto Izmir BlueLR4
Gearbox oil change vs flush advice please?

Hi

I have a 2015 8 speed with 68k miles. As I am not a fan of the D5, I will be keeping it for a while - my last one I swapped at 112k, but I might want this one to do 150k. Reading this forum, it seems that looking after the gearbox is a good thing to ,make it last. I PM'd Geoff., but he doesn't travel and I am in Hampshire.

I went to my local Indy, and he gave me two quotes. Both are high, but he says that is mainly due to the cost of the ZF original oil.

One is to replace 8L of oil and the filter and is £786. THe other is to flush and replace all the oil (12L), and is £723. I didn't get an opinion from him which is best.

So, do you think I should get it done, and which one would you do?

Thanks
 d4 HSE  
Post #193725117th Apr 2018 8:57 am
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geoff.
 


Member Since: 24 Jan 2010
Location: West kent
Posts: 8531

England 

morning stick


with the greatest respect i do travel but like i said 8 speeds are not something i do mobile Thumbs Up
  
Post #193725317th Apr 2018 9:01 am
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stick
 


Member Since: 13 Jan 2010
Location: hants
Posts: 592

United Kingdom 2010 LR4 3.0 TDV6 HSE Auto Izmir BlueLR4

Sorry Geoff, if I have made any misunderstandings, and thank you for clarifying.

Do you have an opinion?

Thanks
 d4 HSE  
Post #193726917th Apr 2018 9:31 am
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Mark Y
 


Member Since: 14 Sep 2008
Location: Warwickshire
Posts: 1249

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Sumatra BlackDiscovery 4

Just had mine done for about half that , mega flush on 8 speed at Allmakes 4x4 Near Malvern , yes I had to travel to get there but if you want it done you have to put yourself out there .
  
Post #193760317th Apr 2018 9:55 pm
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Keefaaa
 


Member Since: 26 Sep 2017
Location: The North
Posts: 55

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Nara BronzeDiscovery 4

In industrial gearboxes flushing is only really used when there is severe degradation of the oil itself and or contamination which has caused something to be left behind in the box and needs to be cleaned off.

So for me I don't see the value of a flush when I get my 8spd oil change at the main dealer for £360 and the local indy wants £600 for a flush and change.

An oil sample is only £20 and will tell me if a flush is needed for the next interval.
  
Post #193762017th Apr 2018 10:51 pm
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

Isn’t the point though that you can’t get all the old oil out unless you flush the old out with new oil?

I thought that just draining the gearbox oil left a fair few litres in the system, so an oil change is really only a partial change!
 

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Post #193764618th Apr 2018 7:25 am
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stick
 


Member Since: 13 Jan 2010
Location: hants
Posts: 592

United Kingdom 2010 LR4 3.0 TDV6 HSE Auto Izmir BlueLR4

Thanks for the comments.

THe thing is, the independent is charging £34.18 +VAT per litre of ZF fluid, so for a 12L flush that is £492.19 for the oil alone. I don't understand how it could be done for half.

If I go the oil change route, then the oil alone is £328.13 so not sure how the dealer would do it for £360. In fact, if only oild change, then a lot of the expenses is changing the filter....
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Post #193766418th Apr 2018 8:27 am
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Tunny
 


Member Since: 30 Apr 2015
Location: Crewe
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United Kingdom 2014 Discovery 4 3.0 TDV6 HSE Auto Corris GreyDiscovery 4

Bristol Transmissions quoted me £300+Vat 6 months ago if that's any help.
  
Post #193775118th Apr 2018 12:42 pm
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M3DPO
 


Member Since: 22 Sep 2010
Location: Notts.
Posts: 8044

England 2014 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

stick wrote:
Thanks for the comments.

THe thing is, the independent is charging £34.18 +VAT per litre of ZF fluid, so for a 12L flush that is £492.19 for the oil alone. I don't understand how it could be done for half.

If I go the oil change route, then the oil alone is £328.13 so not sure how the dealer would do it for £360. In fact, if only oild change, then a lot of the expenses is changing the filter....


That price isn’t far out for Genuine ZF labelled fluid.
Just to clarify, a full flush is done on a very expensive dialysis machine, it sucks the old oil out while pumping fresh in, that is without doubt the best way.
An oil change is removing the sump plug, draining out the contents of the sump not the gearbox and refilling, approx 50% cannot be drained out.
A double change is another oil change a short period after the first change or even at the next service.
I doubt your indie has a dialysis machine as they are very expensive and have to do a massive amounts of flushes to justify the cost.
As far as I am aware ZF like JLR do not produce oil, there are now many alternative recommended brands available that are much cheaper, I would suggest you ask your independent what he would charge if you supplied the oil, I have done a double change on mine using Ravanol oil for around £80, ultimately it doesn’t matter which way you choose, any is better than none, just remember ZF recommend 75k or 40kmiles if working hard.
 It can when others can't,
It will when others won't,
It goes where others don't. 
 
Post #193776618th Apr 2018 1:12 pm
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mick_n3
 


Member Since: 19 May 2017
Location: Kettering
Posts: 421

United Kingdom 2008 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

Flush no questions
When I got my D3 I paid a local indie for a flush turns out all they did was drop the sump and replace oil and filter and a nice new sump pan, I started having issues with it and had Bodsy do a proper flush.

The oil that came out now bearing in mind I had only done 2k was black, afterwards it drove like a different motor, lesson learned that indie won't be getting any more business from me. As has been said you cannot change all the fluid without doing a flush, what is the point of only changing 50%
 
M6NIO 
 
Post #193777918th Apr 2018 2:00 pm
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Stevepd
 


Member Since: 06 Mar 2018
Location: Wiltshire
Posts: 390

United Kingdom 

I was thinking of a flush with my indie and he said i would get change out of £500 and this was a sump removal & filter change method rather than a flush. He has not got a flush machine as he said it was the best part of £3k and would take ages to retrieve that kind of cash for flushes alone.

Do a flush.

Steve.
  
Post #193778218th Apr 2018 2:08 pm
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

Can you not travel and get Geoff to do it for you? You’re in Hants somewhere? Not a million miles from
Kent. Geoff did mine At his place (6 speed though).
 

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Post #193783218th Apr 2018 4:03 pm
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Keyframe
 


Member Since: 01 May 2017
Location: Epsom
Posts: 26

United Kingdom 

Hi Geoff
When you have a quite moment, can you check your PM inbox, I'm interested in booking a gearbox flush with you if possible.
thanks
Peter
  
Post #193899823rd Apr 2018 9:34 am
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robpenrose
 


Member Since: 12 Jan 2016
Location: Surrey / SW London
Posts: 2136

United Kingdom 2010 Discovery 4 3.0 TDV6 HSE Auto Stornoway GreyDiscovery 4

If Geoff is slow to reply at the moment, this is why Thumbs Up

https://www.disco3.co.uk/forum/office-170946.html
 

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Post #193901923rd Apr 2018 10:58 am
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Keyframe
 


Member Since: 01 May 2017
Location: Epsom
Posts: 26

United Kingdom 
foot in mouth

Ah I see, my apologies and condolences for Geoff.
  
Post #193902823rd Apr 2018 11:16 am
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