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W211 thermostat change without draining?

Discussion in 'Engine, Drivetrain, Fuel and Exhaust' started by malloryn, Jan 7, 2013.

  1. malloryn

    malloryn Active Member

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    Joined:
    Mar 31, 2011
    Location:
    cambridge
    Your Mercedes:
    E-Class / 2007 / 2.2 CDI
    Model : W211 2007 220 CDI

    Can you change the thermostat without having to drain the coolant e.g. clamping the right pipes?

    I've read in some posts that the oil filter needs removing, looking in the engine bay this doesn't seem to be the case.

    Also, would any indies out there tell me the expected labour cost's should I choose to save myself the hassle.
     
  2. _Taz_

    _Taz_ Senior Member

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    Location:
    Kent
    Your Mercedes:
    2011 E63 6.3NA AMG Tenorite Estate MCT 7g
  3. television

    television Always remembered RIP

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    Joined:
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    Location:
    Daventry
    Your Mercedes:
    2002 SL500, 216 CL500, all fully loaded
    I just let it run out to a level that allows you to fit the new stat, you could catch the water that comes out and and just pour it through a sieve and re use.
     
  4. Jonny Moore

    Jonny Moore Senior Member

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    Joined:
    Mar 25, 2012
    Location:
    London
    Your Mercedes:
    W212 E250cdi 2011/61
    I had mine done not so long ago, no need to drain it but you'll obviously lose a bit. The oil filter removal just makes the job a whole lot easier, as it's in the way.
     
  5. G-a-r-y

    G-a-r-y Senior Member

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    Joined:
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    Location:
    Bristol
    Your Mercedes:
    S211 320 CDi, SLK 200 R171.
    There is no need to drain the system, only a litre or so is lost.
    Also no need to remove the oil filter.
    However, on the two thermostats I've changed it appears that two bolt holes (replacement stat) aren't threaded. I just wound the bolts in. I thought it was made wrong the first time but after doing the second one (years later) I thought that's how it must be?

    BTW it only takes 10 mins.
     

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