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Roadster Oil Leak

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  • Roadster Oil Leak

    Hi Guys

    Been a while since I posted but im after a bit of advice.
    I have an oil leak on my Roadie, Its leaking in the engine bay somewhere and I imagine its quite near the top.
    Ive taken it to my local mechanic but I dont think he wants to get his hands dirty(no pun intended)
    He has advised me to clean the bay up, so my first question is....

    Whats the best way to clean the engine bay, he advised to throw a couple of kettles of water over it but tbh im not convinced thats a good idea.

    My second question, im worried this has happened because last time I did an oil change I over filled the oil.
    Not by a mammoth amount but I remember reading all the warnings and now im paranoid this is the cause.
    If it is its my own silly fault but im sure im not the first person to do this, so if not is there an obvious place a seal has burst?

    The only isnt a constant leak if that makes sense I can leave the car standing for a week and have nothing but if I drive it around then ill get a couple of drip underneath after so it seems to me its when the engine is under pressure.

    I did a long journey the other day (200+ miles) with oil half full and when I got back it was near empty

    Hope you can help....

    Adam

  • #2
    Where is oil leak ? Can You make a picture.

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    • #3
      Check also the connection between the upper intercooler pipe and the throttle body.

      Comment


      • #4
        Originally posted by bassmanadz View Post
        I did a long journey the other day (200+ miles) with oil half full and when I got back it was near empty
        That is a big leak! If it was leaking that much the rear of the car would be smeared in oil.
        Is it not burning the oil?
        Check the one way valve in the upper breather.

        Jörgen

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        • #5
          The usual places for them to leak are split breather pipe or rusty sump.
          Neither would normally cause the consumption you describe.

          If it was pressure related I would expect to see the dipstick forced from the tube first before any oil escaping form the engine.

          It is far more likely you are burning the oil.

          What grade of oil did you use last service (or are you using to top up?). Is it MB229.5 certified?

          As for your "mechanic" - you want to kick him into touch and find yourself a proper Smart specialist as the advise he has given you is fairly poor.

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          • #6
            Use proper engine degreaser something like GUNK - not a kettle of water.

            Stop using it for long journeys until your sort this out!

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