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Phoenix



Member Since: 16 May 2022
Location: Gone
Posts: 1631

United Kingdom 

Cam-Tech-Craig wrote:
It's always good NOT to feel any difference from any form of gearbox service... Be it a service or a flush...

Can't agree with that, I've carried out plenty of transmission oil changes & double flushes as a restorative repair, often at the instruction of the transmission or vehicle manufacturer, they've gone on to do tens if not hundreds of thousands of miles with no evidence of excessive wear. Conversely, I've changed several of the terrible DSG transmissions that were only 8-10k over the service limit (it really is a limit with them) having tried double flushes first.

Fluid control systems need the oil to be within a pretty tight spec to perform as intended, where the oil starts to break down and lose its ability to transfer pressure properly, then you can get harshness without necessarily increasing wear, replacing the fluid at that point will restore proper operation, I do agree that if you need to use friction modifiers its just a sticking plaster on something that needs surgery.

Post #655321 1st Feb 2023 7:31am
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Mikey



Member Since: 10 Jan 2008
Location: Dundee
Posts: 1740

Scotland 

I agree with Craig (I know Shocked Laughing )

The official interval from ZF is 50-75k miles, depending on use. Lower if it does frequent towing, off roading or high speed driving

If you notice a difference in gear change quality, and a general improvement in "smoothness" then the box was overdue an oil change
If you notice no difference at all, it was changed early enough Thumbs Up

Post #655322 1st Feb 2023 7:36am
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JayGee



Member Since: 27 Jul 2021
Location: London
Posts: 3172

United Kingdom 2012 Range Rover Vogue 4.4 V8 Orkney Grey

I've had 2 changes and there was a previous change on a receipt when I purchased it - no idea what they used for the first 2 but they never changed the pan as it was leaking so had the job done properly with ZF fluid. Didn't notice any change in gearbox behaviour and it's still got a slightly harsh 1-2 upshift when on light throttle. Gearbox software update made a noticeable change in gearbox 'character' although I can't say exactly what it did other than it feels better. The reset with the accelerator pedal is a temp fix for the 1-2 change harshness but it comes back after a while. Also going to WOT / Kickdown on the M-Way sometimes makes it better afterwards. My Audi which had the ZF6 speed also had a harsh 1-2 upshift and a gearbox fluid change didn't fix that either. AFAIK you only need to do a full gearbox reset if you change internals like teh TC or valves / seals - I've left well alone. 2012 TDV8 Vogue (L322)

Post #655324 1st Feb 2023 8:26am
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DrRob



Member Since: 16 Apr 2015
Location: Petersfield, Hampshire
Posts: 4298

United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

Cam-Tech-Craig wrote:
It's always good NOT to feel any difference from any form of gearbox service... Be it a service or a flush... If the gearbox improves then its already damaged im afraid Sniggering Banging Head Thud

Totally agree. If it's Censored , it's Censored .
I noticed no difference on the first change at 80K Thumbs Up Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
--------------------------------------------------

Post #655330 1st Feb 2023 9:57am
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DrRob



Member Since: 16 Apr 2015
Location: Petersfield, Hampshire
Posts: 4298

United Kingdom 2011 Range Rover Vogue SE TDV8 Buckingham Blue

kevinp wrote:
That's quite reassuring Craig. I've read of people saying there was a vast improvement of smoothness after a fluid change so I'm open minded on that one. Does it last?
The car had the gearbox adaptations reset after the first change. That made it worse and took ages to smooth itself out, so I will not be doing it again!!

My adaptations were not touched at the 80K change as there was no need Gone to a good home: 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
2025MY Defender D350 90 in Silicon Silver on coils
1974 Series 3 Lightweight = "Millie"
Many, many other Landies over the years
My preferred specialist: www.glenrands.co.uk
--------------------------------------------------

Post #655331 1st Feb 2023 9:58am
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harleyman



Member Since: 04 Feb 2021
Location: Madrid
Posts: 73

Spain 

TDV8_Tommy wrote:
Good to know.

This morning I dropped off Westie with an ZF-approved transmission service centre for a full flush-through.

ZF-approved are few and far between here.

The chap confirmed it’s a total oil change, done by machine - all rads and lines flushed.

Can’t wait to get her back for a drive.


Hi Tommy,

I.m thinking on doing a good oil change to my 2011 4.4Tdv8 and I was wondering how did you manage to find an approved ZF shop?

I live in Madrid and I would like to find one

and If it not an inconvinient for you couls you let me know hpw much did it cost you so I can have a reference?

Thank you 2012 Range Rover 4.4 tdv8 Autobiography

Post #655379 1st Feb 2023 5:53pm
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TDV8_Tommy



Member Since: 20 Feb 2019
Location: Pinoso, Valencia
Posts: 397

Spain 2012 Range Rover Westminster TDV8 Baltic Blue

Hey harleyman, no worries. Mine is 440€+ IVA so 534€ all in.

https://aftermarket.zf.com/en/aftermarket-...er-finder/ Is the link to find an approved ZF service centre.

I know probably any old garage could service the ‘box, but I wanted ZF approved for peace of mind. 2012 4.4 TDV8 Westminster - Baltic Blue, Jet interior
1997 P38 2.5 DSE auto & 1998 P38 2.5 DT Manual
1988 Vogue 3.5 EFI - Manual, gone.
2004 Volvo C70 2.0T convertible, had since new.
2007 Mazda MX-5 2.0 Sport Roadster/Coupé, had since new.
2024 Mini Cooper S cabrio, JCW kit, 2.0, DCT auto

Post #655385 1st Feb 2023 6:04pm
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harleyman



Member Since: 04 Feb 2021
Location: Madrid
Posts: 73

Spain 

Thank you 2012 Range Rover 4.4 tdv8 Autobiography

Post #655389 1st Feb 2023 6:19pm
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