Just changed pan fluid again after 1000 miles. As you can see by the picture it is still far from clean. Transmission seems even smoother. The majority of the low rpm fifth gear drone was gone after the second fluid change but for a slight odd feel going up hill just before a down shift. If you didn't know this transmission you wouldn't think anything was off. I plan on another drain and fill in about 3000 miles. I will continue this until I see fluid that still has some resemblance to that new honey color.
Just a FYI on transmission temp. Using the iidtool transmission temp goes from 28c on a morning cold transmission to 41c in about 10 min. So if you are doing this change without a way to accuracy measure oil temp keep this in mind. IR temp readers reading the pan temp are not reliable.

Click image to enlarge

This is a useful thread - thanks for the info - I have my trans oil change due (got everything ready - just need the time)
Thanks very much  Howard
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2002 4.4 V8 LPG Tartarini
Have RSW AllComms in Cheshire J17 M6 - happy to help.
*Gone: Classic Vogue SE Auto V8 3.9

Unnecessary quote removed

I have just drained my trans a second time, pretty crummy fluid came out again. I had 3 litres of fluid at hand so drained 3 and put three in. Like you I think I will do this again in a few months.
I am doing this as I notice some very slight hesitations infrequently with shifts and also a slight shudder going into reverse every now and then.

Hi

Can anyone answer this for me - as I am some what confused

I have one of our FF booked in at LR dealership to have the Auto Box oil & filter renewed in January. ( TDV8 4.4 )

Mileage on her is 52,000 ( I don't believe in the 150,000 rule )

1. If you have your car serviced at the recommended mileage 150,000 Gear Box Oil RENEW ( As LR state is correct ) - why is everyone draining and doing what you call a Flush ?????? - surely the oil is like gold dust at the cost !

Surely LR would do this ?
Surely LR would drain and refill with new oil twice to flush ?

In a nut shell - why are some people doing it 2 or 3 times ?

and believe you me - I look after our cars
Diff Oils get changed every 20,000
Transfer box oil changed every 20,000
Engine Oil & Filter Oil every 7,500
Power steering changed every 7,500

At £850 A POP - for the auto box oil service is not cheap - but doing it 2 or 3 times ? That's like £1700.00

You have me thinking - Do I get them to do it over a 5,000 mile run and re-change it to get it flushed !


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Flushing is a different process.
we are draining the fluid, this way you get 3-4 litres out, its only a partial change. My cost for this was aud$66.
I changed my filter last time I drained my trans which saw about 5 litres for a refil.
A flush will use at least 15litres as you are re filling the system at the same time as draining it which changes the fluid out in the torque converter.......this is much better.
I could do this but it is a little risky if you get it wrong the trans will be running dry and even for a few seconds this could spell death.

Emirates777 wrote:

You have me thinking - Do I get them to do it over a 5,000 mile run and re-change it to get it flushed !


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Emirates777 wrote:

You have me thinking - Do I get them to do it over a 5,000 mile run and re-change it to get it flushed !


.

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Hi RR P38 & doclees

Thank you for replying back - appreciated.

Yes I have a 12 year FF and it has a ZF 8HP.

There' not much I don't know about these cars - but Transmission box I have not ever had any dealings with.

when you say:

Quote:

Just be sure it gets well cooled.

Quote:

"sealed for life" mistake

Surley a car with 1 million miles on it - would not have the same oil in the transmission box - or are they saying the life of the average owner is approx 3 years ? - is that where they get the Sealed for Life Philosophy from
I have seen a DS3 with 480,000 on it

RR P38
I read with interest that you change your: Transmission filter
is this easy to do - if so how many hours from start to finish would it take - any special tools ? - is it easy to get to on a scale of 1 to 10 ?

Thank you both again for writing in


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I assume it gets real hot out there. I would also assume the dealer would advise you if you needed extra cooling for the transmission. If not just be sure your cooling system is doing its job. Since you bring it to the dealer for service I assume they check it.

For a while some transmission makers were saying you NEVER needed to change the fluid. As the complaints of transmissions gong belly up around 100k the manufacturer, like ZF, got wise and started advising fluid and filter change between 40k and 60k. So for unserviced ZF 5hp24 life expectancy was about 100k miles.

I can't say for the ZF 8HP but I can't imagine it being any more difficult than any other automatic. Really no more difficult than changing engine oil except a bit more of a mess and a couple more steps. A lift would be a real benefit.

Emirates777 wrote:

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Hi RR P38 & doclees

Thank you for replying back - appreciated.

Yes I have a 12 year FF and it has a ZF 8HP.

There' not much I don't know about these cars - but Transmission box I have not ever had any dealings with.

when you say:

Quote:

Just be sure it gets well cooled.

How do you mean - do you mean I should get a upgraded Oil cooler as I was thinking about this last month from someone like AHF Fabrications I goggled.
Charge Cooler
http://www.ahfabrications.com/index.php?cP...3td5fmfbl7 ??????

What do you mean by:

Quote:

"sealed for life" mistake

Surley a car with 1 million miles on it - would not have the same oil in the transmission box - or are they saying the life of the average owner is approx 3 years ? - is that where they get the Sealed for Life Philosophy from
I have seen a DS3 with 480,000 on it

RR P38
I read with interest that you change your: Transmission filter
is this easy to do - if so how many hours from start to finish would it take - any special tools ? - is it easy to get to on a scale of 1 to 10 ?

Thank you both again for writing in


.

+1 i have the older 5hp24, and yes, the torx bolts holding the sump on are a t27 fit, although, as i found to my cost, the typical set of torx allen keys, come with a nearly correct t25 size. these fit a 'not too tight' bolt, but will shear the torx head pattern, and make you end up having to use a chisel to get and edge on undoing the bolt, so yes, make sure you have a snug fitting torx t27 of a decent brand, not say, market stall chinese quality.
after you have drained the sump, leave it a couple hours, for the drips to work way down, then get the sump off. As above, it is all drippy once the sump is off, though an old towel and a large sheet of cardboard helps to reduce the problem. it's going to run up your wrists anyway.

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This is worth watching ( forget he's American ) - he's talking sense


https://www.youtube.com/watch?v=acY5iLNq2V4




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Hi P38 & Doclees

Thanks guys for coming back to me with the bits I needed answering - appreciated



For those with a interest in this also - I have just done today Auto box on one of our 4.4 TDV8 full oil change with new Filter, never knew the filter was all one unit !

I have attached a Picture of the Auto Box sump so you can see what your up against - hope its helpful to someone also

You have a different pan to the earlier L322.
Both mine and Docles are all metal pan and a separate metal filter attached to the valve body of the trans.

How much fluid did you drain? and put back in?

Its interesting that the vast majority of "transmission specialists" I have encountered say that there is NO filter in this trans or they just call it a screen. I have cut a few open and can most certainly attest to it being a filter when you view the crud that it captures.

Good work

It's not a filter, as such. It's more of a coarse gauze

Click image to enlarge

Click image to enlarge