tiptronic gearbox

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   hello everyone
i would like some opinions/help on changing the gearbox oil on my 840 sport as its got 114k on it although its fine changing when it should etc.went to local bm dealer who said no problem 40 mins and 3 litres will do the box great i thought,rang up independent who said 8 litres but not including torque converter as gearbox has to dropped and some have give up the ghost when its been changed i.e not broke dont fix.so is it worth just doing the box with 3 litres or should it have 8.any thoughts.
many thanks

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martin carey Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 12 Jul 2009 Location: United Kingdom Status: Offline Points: 21	Post Options Post Reply Quote martin carey Report Post Thanks(0) Quote Reply Topic: tiptronic gearbox Posted: 27 Jan 2010 at 10:53am
	hello everyone i would like some opinions/help on changing the gearbox oil on my 840 sport as its got 114k on it although its fine changing when it should etc.went to local bm dealer who said no problem 40 mins and 3 litres will do the box great i thought,rang up independent who said 8 litres but not including torque converter as gearbox has to dropped and some have give up the ghost when its been changed i.e not broke dont fix.so is it worth just doing the box with 3 litres or should it have 8.any thoughts. many thanks

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dteagles Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 09 May 2007 Location: UK, Bucks Status: Offline Points: 3476	Post Options Post Reply Quote dteagles Report Post Thanks(0) Quote Reply Posted: 27 Jan 2010 at 4:31pm
	I'm no expert but I would be surprised if changing the oil would be the reason it expires......
	Think about what you can do for the club, not what it can do for you...

Bern Members Profile Send Private Message Find Members Posts Add to Buddy List Region Chair Central Region Chairman Joined: 10 Oct 2006 Location: United Kingdom Status: Offline Points: 1237	Post Options Post Reply Quote Bern Report Post Thanks(0) Quote Reply Posted: 27 Jan 2010 at 7:01pm
	Hi Martin I would recomend any auto box over 100k have its oil and filter changed. It is not mileage that damages auto boxes, it is heat. If the filter is blocked, the oil wont flow very well and will get a lot hotter which will ruin the clutches. It is not necessary to remove the box, therefore the torque converter is not touched; the sump is dropped and the filter removed through the sump opening. The CORRECT oil is expensive and i think mine took 7 litres to refill. The refil is very awkward and time consumimg, really needing a low power pump to help get it into the filler, all while the engine is running and hot! Several 7 series owners have actually taken their cars to ZF in Germany who not only change the oil and filter, but also the valve assy, with costings about �300 plus travel cost. Not sure if the newly opened ZF facilities in the UK now offer the same. I would not trust this job to any garage who has not had experience doing this job. Also,any premature wear of the clutches will be seen when the oil is drained and the filter checked. Auto oil/filter changes then every 50k.
	Drive a BMW and you will have a smile on your face every time (and- drive twice as far as you need to !!)

martin carey Members Profile Send Private Message Find Members Posts Add to Buddy List Club Member Joined: 12 Jul 2009 Location: United Kingdom Status: Offline Points: 21	Post Options Post Reply Quote martin carey Report Post Thanks(0) Quote Reply Posted: 27 Jan 2010 at 8:19pm
	hiya thats problem if they run it too hot too long they can glaze the bores etc.even at bm garage i was asking questions about filter etc and just got a blank look and computer says 3 litres so........ hence reason for further advice