Auto gearbox oil change?

Discussion in 'Engine' started by jimmy, Jan 31, 2003.

  1. jimmy

    jimmy Hardcore MB Enthusiast

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    My car is approaching the 60K mile mark. I am sure I heard somewhere that some people recommend that the auto gearbox oil is changed at around 60K miles.

    Don't MB claim that the electronic 5 speed box is sealed for life and that a fluid change is not neccessary?

    Has anybody any experience of this in their car? I was thinking of doing it myself if it was worthwhile.
     
  2. tosborne

    tosborne Member

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    I had read about this as well, and recently had the auto transmission and differential fluid changed. I can't believe any oil/fluid will last forever. I took my C240 to a local Mercedes specialist and it cost about £100 to get them both changed - a lot cheaper than a new tranmission! :)
     
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  3. Fudger

    Fudger Hardcore MB Enthusiast

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    Jimmy, I know MB say the newer tip gearboxes are sealed but not the standard 5 speed auto's we are used to in the C class.

    George Fraser will insist you get it done considering the mileage. Mony well spent at this stage to stop problems later. He claims this for both the standard and tiptronic as I found out recently.
     
  4. SPS

    SPS Active Member

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    read and saw pics of george fraser's garage in alperton.

    looks like a good place for servicing a benz,

    does he use genuine merc parts,lubricants and fluids?:bannana:
     
  5. Koolvin

    Koolvin Administrator Staff Member

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    yup, unless you tell him not too
     
  6. Steve_Perry

    Steve_Perry Hardcore MB Enthusiast

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    Jimmy,

    I got my auto box oil changed at 60k miles, George said it probably needed it as the oil was a bit brown.

    Ditto to Fudger's comments... George has told me exactly the same thing and I trust his judgement as he strips and rebuilds these gearboxes day in and day out.

    S.
     
  7. Steve_Perry

    Steve_Perry Hardcore MB Enthusiast

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    Even then, he'll probably try to persuade you to stick with original MB parts :p

    S.
     
  8. OP
    OP
    jimmy

    jimmy Hardcore MB Enthusiast

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    So is a gearbox fluid change done as part of a scheduled MB service? If so at what age/mileage?

    Would it be an easy DIY job? I think the gearbox dipstick has a tamper evident seal on it.:(
     
  9. Steve_Perry

    Steve_Perry Hardcore MB Enthusiast

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    Jimmy,

    As far as I know, MB wouldn't touch the new electronic gear boxes unless the owner reports a fault. As for easy DIY job, you have to be exact in terms of oil type and volume used as the new gearboxes don't tolerate minor deviations from specifications. If you do break the tamper proof seal and take the cap off then you'll find you don't have an auto-box dip-stick, although you can buy these items from your local stealer.

    S.
     
  10. Shude

    Shude MB Club Veteran

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    The oil is supposed to be brown, when it's brown it means it's working :)

    I was talking to one of the stealership servicing guys and he said that the fluid in the electronic autos was "charged" with an electrical current, so it flowed properly. The older autos had a problem sometimes when the cables running around the box would "draw" the oil with the current in the cable, sometimes thinning the oil in places or causing it to flood/spill over to places that shouldn't have fluid on them. I don't know if this means that the fluid is different somehow, but the stealership guy said that it was "polarised" or something. Sounds scary! My auto has done 137k+ miles now and it still works exactly as expected *touch wood* , maybe the lifetime fill theory is correct? My concern is that once you've replaced it, it might need replacing every few thousand miles if it's not the right fluid or it's not been done to manufacturing specifications. I guess only time (and miles) will tell.
     
  11. Steve_Perry

    Steve_Perry Hardcore MB Enthusiast

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    George meant browner than it should have been :p

    He only uses OEM MB equipment that includes auto-box oil.

    I didn't know the fluid was polarised though. Learn summat new every day.

    S.
     
  12. zerocool

    zerocool Hardcore MB Enthusiast

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    the new auto boxes on mercs have for life oil in them,
    according to merc if you change the oil in these boxes it will invalidate the warranty.
    only time will tell if FOR LIFE really is for life.
    If I owned a merc with this type of box in it ,I would be a bit worried once it was out of warranty,and around the 60,000 mile mark.
    to be honest we have had no bother with them so far though.
    but loads of probs with the shift matics,manual gearbox with no clutch pedal(BURNT OUT CLUTCHES ETC AFTER 3,000MILES)
    could be due to the fact that if you rest your hand on the gearlever it can sometimes move it slightly and make the ecu think you are going to change gear,making it actuate the clutch slightly,thus causing it to slip.
     
  13. bob6600

    bob6600 Hardcore MB Enthusiast

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    The OP needs more than luck if they haven't sorted this in over 11 years!
     
  14. E270 Owner

    E270 Owner Hardcore MB Enthusiast

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  15. DSB SL AMG

    DSB SL AMG Hardcore MB Enthusiast

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  16. Steve_Perry

    Steve_Perry Hardcore MB Enthusiast

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    Yes... the later 7G-Tronic boxes are recommended to have an oil change at 37.5k and then not touched ever again. Back in 2003 we were talking about the 5 speed electronic box which at the time were quoted as being 'sealed for life' by MB.

    Coincidently, I've just had the auto box oil in my CLS changed as part of a service at 34k they thought better to change a little early than very late.

    Blimey, it's weird seeing a thread being dug up 11 years later. I wonder if the OP still has the car? :dk:

    S.
     
  17. DSB SL AMG

    DSB SL AMG Hardcore MB Enthusiast

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    Nickpapa1 strikes again lol

     
  18. E55BOF

    E55BOF Hardcore MB Enthusiast

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    Eleven years later, it's still a very valid point. General experience seems to be that 'sealed for life' mostly results in a shorter life as far as gearboxes are concerned.

    I was interested to read that MB used special 'polarised' fluid. Sounds like b*ll*cks to me, but does anybody know different?
     
  19. dhk284

    dhk284 Hardcore MB Enthusiast

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    I have heard that mb seem to be saying now that life isn't life any more, I didn't know as well about the charged fluid thanks for that one can you buy that fluid and is it just a gimmick. I thought the gearbox fluid was a bright charry and turned brownish when it was dead. I have also seen that only up to half the fluid will drain from the gearbox the rest will be left in the touque converter.
     
  20. E270 Owner

    E270 Owner Hardcore MB Enthusiast

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    Sealed for life =@ 4-5 years, same as the ZF's gear boxes in Jag/BMW .

    The gearbox sump is the filter housing OEM £200 for the filter + £100 for the oil.

    Merc owners get away cheaply on the filter and oil change @ £150-£175
     

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