GM Gearbox Oil Change For L322 2004 Diesel Vogue

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nevillen

nevillen

Well-Known Member
Posts
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Location
london
So, next up on the endless list is:replacing the geabox oil in our (sealed for life) automatic 5 speed GM gearbox. There are plenty of youtube videos etc involving dropping the protective covers and then the G/B sump, replacing the 24 bolts and fitting a new filter and gaskets, but I was thinking why not use a suction pump to extract the old oil, just like I used to change the engine oil?
I can see no reason why, with a 'gentle' approach, that it is not possible to use the same technique? I know it wouldn't be perfect because it would still have the old filter, but as an interim, surely it would be worth giving it a go becaue the new gearbox oil would be a lot cleaner and fresher than the existing oil.
Has anybody tried this method or will it blow the gearbox up straight away? Answers on a post card please!
 
nevillen said:
So, next up on the endless list is:replacing the geabox oil in our (sealed for life) automatic 5 speed GM gearbox. There are plenty of youtube videos etc involving dropping the protective covers and then the G/B sump, replacing the 24 bolts and fitting a new filter and gaskets, but I was thinking why not use a suction pump to extract the old oil, just like I used to change the engine oil?
I can see no reason why, with a 'gentle' approach, that it is not possible to use the same technique? I know it wouldn't be perfect because it would still have the old filter, but as an interim, surely it would be worth giving it a go becaue the new gearbox oil would be a lot cleaner and fresher than the existing oil.
Has anybody tried this method or will it blow the gearbox up straight away? Answers on a post card please!
Click to expand...
A lot of money for half a job. It's worth dropping the sump just to see how much debris there is in there. Don't forget filling must be done at the correct temperature.
 
nevillen said:
So, next up on the endless list is:replacing the geabox oil in our (sealed for life) automatic 5 speed GM gearbox. There are plenty of youtube videos etc involving dropping the protective covers and then the G/B sump, replacing the 24 bolts and fitting a new filter and gaskets, but I was thinking why not use a suction pump to extract the old oil, just like I used to change the engine oil?
I can see no reason why, with a 'gentle' approach, that it is not possible to use the same technique? I know it wouldn't be perfect because it would still have the old filter, but as an interim, surely it would be worth giving it a go becaue the new gearbox oil would be a lot cleaner and fresher than the existing oil.
Has anybody tried this method or will it blow the gearbox up straight away? Answers on a post card please!
Click to expand...
Try finding a dipstick tube on most gearboxes:confused:
The best method is to drop the oil and leave it as long as possible to drain as you know;)
 
As said drop the sump and see how much crap is in there, why spend a fortune on oil and leave in a dirty old filter.
A fair amount of oil stays in the TC so best to drain as much as you can. Also depending on mileage you may be on borrowed time anyway.
 
You are right about the borrowed time aspect, engine has done 191,000 but gearbox oil has been changed at 80,000 and 160,000 so technically could wait until it goes bang! I am also on a borrowed time schedule because of having advanced lung cancer (not from smoking) I am having chemo and immuno therapy treatments..1st prognosis 6 months, then 12-18 months now 2-5 years because of positive results...maybe I will outlast the Beast which is why I would even countenance the gearbox oil change. I am a meddler and cannot leave things alone!
 
nevillen said:
You are right about the borrowed time aspect, engine has done 191,000 but gearbox oil has been changed at 80,000 and 160,000 so technically could wait until it goes bang! I am also on a borrowed time schedule because of having advanced lung cancer (not from smoking) I am having chemo and immuno therapy treatments..1st prognosis 6 months, then 12-18 months now 2-5 years because of positive results...maybe I will outlast the Beast which is why I would even countenance the gearbox oil change. I am a meddler and cannot leave things alone!
Click to expand...
Sorry to hear this dude. Keep up the good fight!!
;):D
 
nevillen said:
You are right about the borrowed time aspect, engine has done 191,000 but gearbox oil has been changed at 80,000 and 160,000 so technically could wait until it goes bang! I am also on a borrowed time schedule because of having advanced lung cancer (not from smoking) I am having chemo and immuno therapy treatments..1st prognosis 6 months, then 12-18 months now 2-5 years because of positive results...maybe I will outlast the Beast which is why I would even countenance the gearbox oil change. I am a meddler and cannot leave things alone!
Click to expand...

Sorry to hear about your borrowed time, life is a bitch, from 6 month's to 2-5 years is a fair jump so gives a little more hope.
I suspect at 191k the gearbox has been rebuilt at least once but 80k intervals IMO are too long.
 
at 191k i'd say its on its 3rd box easily,

As for servicing yes dropping the sump is the only way to be fair, the contents of the sump will give you an idea of the condition of the box if its full of clutch material or chunks of metal then its a pre-emptive warning, its also worth pulling the old filter apart to check for debris, often overlooked. :)
 
Yep. Dropping the sump is the only proper way, I was hoping to avoid all the work involved, but realise it would be almost pointless just to exctract the old oil and not change filter.
 
That’s how I had mine done at local transmission place, drop sump and check contents and filter etc, he stated “only few very small fillings, nothing at all to worry about right now” and also said he thinks it may have had a rebuild, mine was on about 139,000 at that point. In all fairness there not that bad a box, when working very smooth and to get rebuilt not that expensive iv been quoted £1900 to remove-rebuild-refit from sample place who did the service.
 
Much relief, just found out from original owner that gear box had oil and filter change last year. Makes you wonder why RR didn't issue retrospective advise about changing gm 5 speed autobox oil every 80,000 instead of claiming it was a 'sealed for life' unit....couldn't be because they wanted to sell off a bit of old stock could it?
 
nevillen said:
Much relief, just found out from original owner that gear box had oil and filter change last year. Makes you wonder why RR didn't issue retrospective advise about changing gm 5 speed autobox oil every 80,000 instead of claiming it was a 'sealed for life' unit....couldn't be because they wanted to sell off a bit of old stock could it?
Click to expand...
Doubt it, more like they don’t bother with oil changes knowing as long as it lasted 3 years from new warranty period there not bothered if it goes bang after, then you get recovered to Land Rover and all they say is “new gearbox will cost you more than your house”
By sound of it both GM & ZF all Recomended gearbox services. BMW we’re the same with the x5, first with the gm box then the later zf 6 speed, think it’s only recent years they have brought in a gearbox service but can’t be certain but sure I heard about them offering it.
 
rich28uk said:
Doubt it, more like they don’t bother with oil changes knowing as long as it lasted 3 years from new warranty period there not bothered if it goes bang after, then you get recovered to Land Rover and all they say is “new gearbox will cost you more than your house”
By sound of it both GM & ZF all Recomended gearbox services. BMW we’re the same with the x5, first with the gm box then the later zf 6 speed, think it’s only recent years they have brought in a gearbox service but can’t be certain but sure I heard about them offering it.
Click to expand...
The ZF HP22 was supposedly sealed for life until they found out that the life was very short:rolleyes:
 
I dropped and changed fluid in mine a couple times after i had changed the gearbox because i had fluid sat,
Then i just left it and did a change after 50k of the box being in,
I came to the conclusion that if it lasted 100,000 miles it was easier and cost worked out similar just to fit another box
Rather then do filter and gearbox oil at every service just to prolong the life by a few 1000 mile to have a box go pop again anyway,

Mabye a negletful way of looking at it but 100,000 mile out of a clutch or a gearbox its lived its life
 
stustrong said:
I dropped and changed fluid in mine a couple times after i had changed the gearbox because i had fluid sat,
Then i just left it and did a change after 50k of the box being in,
I came to the conclusion that if it lasted 100,000 miles it was easier and cost worked out similar just to fit another box
Rather then do filter and gearbox oil at every service just to prolong the life by a few 1000 mile to have a box go pop again anyway,

Mabye a negletful way of looking at it but 100,000 mile out of a clutch or a gearbox its lived its life
Click to expand...
That is not my experience. I guess you are one of the young "throw away generation"
 
Datatek said:
That is not my experience. I guess you are one of the young "throw away generation"
Click to expand...
Younger 33, i just saw it at 100k unserviced the box/clutched torque converter has lived its life if it lasted till 120 130k serviced every 12k at £90 for a diy jobby, thats £900 to last a year longer £900 that could go towards a new box,
My current is with the 6hp26 on 127k i did fluid and filter a valve body out a recon box i just see however long it lasts beyond 100k is borrowed time,
 
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