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Air and cabin filters

Discussion in 'General Mercedes-Benz Related Discussion' started by Capra, May 9, 2019.

  1. Capra

    Capra Senior Member

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    I was going to order a replace set, but am I wasting money. Air filter were replaced 13 months ago at 43448 miles, and the cabin filter was done 25 months ago on 32890 miles. Millage is now at 52k. Not sure sure what the 'Mann Frecious Plus cabin filter' is much better than the standard? but we both have summer allergies and wonder if this would help?
    I can get three filter for £75.
     
  2. LostKiwi

    LostKiwi Senior Member

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    It won't do any harm (other than a minor dent in the bank balance).
     
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  3. OP
    Capra

    Capra Senior Member

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    Silly me, cabin was done as part of the B service!
     
    Last edited: May 9, 2019
  4. OP
    Capra

    Capra Senior Member

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    The filters are fairly dirty, plus there seems to be some oil within the intake, is that normal?

    IMG_20190509_191253.jpg IMG_20190509_191437.jpg
     
  5. bembo449

    bembo449 Senior Member

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    its a diesel pal , the oily stuff gets everywhere :rolleyes:
     
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  6. OP
    Capra

    Capra Senior Member

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    Mental that it got there, hey ho.
     
  7. bembo449

    bembo449 Senior Member

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    I presume thats the MAF ( not worked on a 350 yet ) and so part of the intake set up , hot oil vapours run round the system at quite a rate of knots so I always would expect to see residue on parts connected to it , whats the other side of your cab filter like pal ?
     
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  8. OP
    Capra

    Capra Senior Member

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    Yep, I believe it is. I knew deisels were mucky but not this much. Would you replace the filters, they look a bit grimey as well.
     
  9. Gazwould

    Gazwould Senior Member

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    Normal petrol or derv crankcase oil vapour , they both suffer but the diesel is extra sooty from incomplete combustion of diesel molecules thanks to the egr .

    The inlet manifold gets alot of the combined muck and can reduce the intake by 2/3 .

    Causing poor efficency - less mpg , power etc and MORE emissions .
     
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  10. OP
    Capra

    Capra Senior Member

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    Is that what the crankcase breather tube thing was for? Would you change my filters?
     
  11. OP
    Capra

    Capra Senior Member

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    Just thought, I believe you have to reset the ECU with star once this has been done, I think? :confused:
     
  12. EmilysDad

    EmilysDad Senior Member

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    But I've also been told by an indie, that the car will learn itself that the filters have been changed ... :confused:
     
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  13. OP
    Capra

    Capra Senior Member

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    Our cars are like urban myths. Surely needing star would just raise the service costs?
     
  14. Gazwould

    Gazwould Senior Member

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    How muc

    I would get the FreciousPlus , how much ?
     
  15. OP
    Capra

    Capra Senior Member

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    About £23 I think. But I realised i don't need them, it's the air filters that were done a year ago.
     
  16. Gazwould

    Gazwould Senior Member

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    You do...

    It's not an ordinary charcoal pollen filter and deals with the issues of the diesel demonisation..
     
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  17. EmilysDad

    EmilysDad Senior Member

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    No wonder 350 air filters are as expensive as they are, you seem to have half the filter housing incorporated with the filter itself. Why can't MB have designed an air filter that just replaces the filter itself?
     
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  18. OP
    Capra

    Capra Senior Member

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    Part of the MAF filter plugs directly into the new filters as well.
     
  19. EmilysDad

    EmilysDad Senior Member

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    On my R Class, the Y piece that joins the two air intakes with the turbo inlet had a small piece missing at end where a jubilee type clip was. I assumed that it would be separate from the 2 MAF sensors but was wrong. The whole thing was a few hundred quid .... needless to say I lived with the original part.
     
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  20. JBell

    JBell Senior Member

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    Yes you do
     
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