Dave T
Member Since: 03 Jul 2009
Location: Glasgow
Posts: 6910
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I’d never heard anyone say don’t get a mega flush on any of these sites until this appeared on RRS yesterday
https://glenrands.co.uk/2021/03/28/know-yo...dont-need/
Thoughts and comments? I’m just getting to that ball park figure now. Joined the BMWX5 45e group
1994 Defender 90
2015 RRS Corris Grey/Black roof
2016 D4 Graphite Santorini Black
2012 D4 XS Orkney Grey
2005 D3 S Maya Gold
Convoy for Heroes 2011
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 18th Sep 2021 6:21 am |
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Sea Raider
Member Since: 01 Nov 2016
Location: None
Posts: 4450
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Watching this with interest as I'm booked into the only place to go in Dundee on Thursday coming for this very thing, my D3 has 67000 miles on the clock
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| 18th Sep 2021 7:10 am |
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nigethecat
Member Since: 11 Sep 2016
Location: Marnoch
Posts: 4244
  
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I know that place !  Take cakes, lots of cakes 
I’d think it would be a combination of the services listed, when I had my D3 megaflushed I’d replaced the filter and housing the week before so all was clean anyway (two lots of gearbox oil but that’s hardly a concern in the grand scheme of things). I want to see the sweets before I get into your windowless van... I'm not stupid!
Corris Grey D4 Commercial SE 2016
Zermatt Sliver 2007 D3 SE manual (gone)
Indus Silver D4 HSE 2015 (gone)
Bonatti Grey D3 HSE 2006 (gone)
White D3 S (LHD) 2007 (gone)
Firenze Red D4 HSE 2014 (gone)
Black RRS 3.6TDV8 2008 (gone)
Rusty Green Defender 110 1997 (gone)
Black FL2 HSE 2013 (gone)
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| 18th Sep 2021 7:34 am |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10808
 
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Interesting.
I focused on a couple of statements:-
"Land Rover recommends against transmission flushes."
and
Fact #3: Transmission flushes can damage your transmission.
Quote:As mentioned above, a transmission flush (using an external machine) may not be good for your transmission. Here is an excerpt from a technical service bulletin that provides an opinion on transmission flush machines:
Can anyone point me to where Land Rover make that recommendation & to the TSB in question please?
NJSS
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| 18th Sep 2021 8:14 am |
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kajtzu
Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6756
  
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Well, we all know that people write silly stuff on the internet, don’t we 
- The D3/D4 ZF transmission do not contain any very special Land Rover magic
- ZF recs changing the ATF every 100k km/8 years whichever comes first.
- The Ford 6R60 AND 6R80 are licensed versions of the ZF 6HP transmissions. The ‘muricans (Ford) recommend flushing, actually, rather than drain and fill
- the snowflakes owning BMWs wouldn’t flush their transmissions religiously if it was any threat to their pretty vehicles 
- reason some vendors write lifetime is that people calculating fleet maintenance costs have a lower total cost of ownership (TCO)
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| 18th Sep 2021 9:03 am |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10808
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I'm very happy with the idea of a MegaFlush.
Ian Bodsworth (UpdatesByBodsy) is looking after my car & a couple of others in my drive in November -
he doesn't use "flushing chemicals".
NJSS
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| 18th Sep 2021 10:31 am |
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kajtzu
Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6756
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They’re optional - you don’t have to put them in before nor additives after.
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| 18th Sep 2021 10:33 am |
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Disco_Mikey
Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20844
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Quote:
Fact #3: Transmission flushes can damage your transmission.
Quote:As mentioned above, a transmission flush (using an external machine) may not be good for your transmission. Here is an excerpt from a technical service bulletin that provides an opinion on transmission flush machines:
Can anyone explain why this is?
Our machine has 2 pressure sensors, and 2 flow sensors
It measures the pressure and quantity of oil being pumped out of the gearbox, and automatically replaces it with new oil of the same volume and quantity. Exactly the same as if the oil were being pumped through the cooler and back into the gearbox... My D3 Build Thread
TDV8 Retrofit Build Thread
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| 18th Sep 2021 12:37 pm |
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kajtzu
Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6756
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It isn’t. Perhaps there are worse machines somewhere on the planet? The ones I’ve seen replace volume for volume simultaneously just as you say yours does.
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| 18th Sep 2021 1:18 pm |
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DrRobH
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 927
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NJSS wrote:I'm very happy with the idea of a MegaFlush.
Ian Bodsworth (UpdatesByBodsy) is looking after my car & a couple of others in my drive in November -
he doesn't use "flushing chemicals".
NJSS
Let me know which day and I’ll come over and say hello  Visitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight
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| 18th Sep 2021 1:24 pm |
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DrRobH
Member Since: 10 Oct 2015
Location: Hampshire
Posts: 927
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Bodsy did my 8speed. No issues before, no issues after. No additives used.
I have no problem recommending a Megaflush to anyone with the caveat that it’s not to be used for a box that’s already got issues. It’s not used as a cure, it’s used as part of a preventative maintenance schedule.
I think this is where some folks get confused and mixed up Visitor from fullfatrr.com
RR Vogue SE 2011 4.4 TDV8
1974 Lightweight
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| 18th Sep 2021 1:26 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10808
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Rob
I'll PM you - hopefully towards the end of the day when we can all enjoy a glass of whatever!
Regards
Nigel
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| 18th Sep 2021 2:51 pm |
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MJA
Member Since: 08 Jul 2021
Location: Hertfordshire
Posts: 85
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Bodsy did a megaflush on my car a month ago. It shifts slightly smoother and the mpg has marginally increased. However I did it becuase it makes sense from a preventative maintance point of view and there was no history of it being done in the past.
He also gave my car the once over whilst he was there and gave me a friendly heads up on things. OK not megaflush related but still nice to have a genuine chap working on the car.
I read the article but it seems bedded with Land Rover marketing logic or perhaps that garage just doesn't offer the service.... Anyway these gearboxes are used in mutiple vehciles and the gearbox manufacture themselves suggests otherwise to LR logic. Equally it is logical that lubrication fluid will detoriate over time and it is also logical that a flushing machine will get more fluid changed than a simple drain of the system. Since we change gearbox oil once in a blue moon it makes sense to use a machine to get as much out as possible.
It's a bit like 24 mth servicing - just a marketing ploy to make the new car look cheaper to run. Never mind on the 20 odd grand in depreciation you'd lose over just keeping your old car... Land Rover(s) : '10 Discovery 4
Other daily: '13 Seat Exeo ST 170
Toys: '95 VW Corrado VR6 | '96 VW Golf GTI 16v | '91 VW Golf GTI 16v
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| 18th Sep 2021 6:57 pm |
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kajtzu
Member Since: 10 Aug 2017
Location: Helsinki
Posts: 6756
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I think one problem with the flushes is that “many” do not do them as part of a maintenance schedule but instead at the point where something is already slightly funky with the transmission and it’s made as a Hail Mary kind of a thing…
Similarly, people push in tubes of dr tranny to mitigate/fix TC and other symptoms - it’s all temporary of course
I’m guessing these “mods” don’t get disclosed when cars are sold further on.
So then one decides to do a mega flush and the results are somewhat surprising, instead of betterment one ends up with a transmission that is on the way out.
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| 18th Sep 2021 7:19 pm |
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