Strange Clacking sometimes on Startup
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This is a discussion on Strange Clacking sometimes on Startup within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; Hi Guys, Need a bit of advise I have a 01 japanese import wrx. I live in a pretty hot ...

  1. #1
    Registered User speedracer866's Avatar
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    Strange Clacking sometimes on Startup

    Hi Guys,

    Need a bit of advise I have a 01 japanese import wrx. I live in a pretty hot country. Changed the oil recently using full synthetic mobil 1 10w/30 oil, however I notice now since the oil change that occasiionally on a cold start up I would hear a strange clacking sound which then goes away in a few secs. My mechanic advised that I should put in something thicker than what I have currently as it might be the simms on the car. Can anyone shed some light, any similar problems.
    Last edited by speedracer866; 11-06-2008 at 05:41 PM. Reason: Misspells

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    Admiral Ackbar the 1st mycologist's Avatar
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    It is pretty normal.
    "From a little spark may burst a mighty flame." - Dante
    "The stitch is lost unless the thread is knotted." - Italian proverb

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    Registered User speedracer866's Avatar
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    Could you explain a bit more.

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    Admiral Ackbar the 1st mycologist's Avatar
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    It is just the way a lot of our cars sound when you start them up cold but it isn't a problem usually. Thicker oil may help but the noise probably isn't doing any harm. Subaru will look into it only if the sound doesn't go away when it is warmed up or if it isn't the normal clacking they make when cold. I've heard all sorts of relatively new Subs make this noise.
    "From a little spark may burst a mighty flame." - Dante
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    Registered User speedracer866's Avatar
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    Oh really was a bit worried, first time i heard was after the change i didn't drive the car for a whole day, never heard it before so was a bit worried. Thanks dude.

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    Admiral Ackbar the 1st mycologist's Avatar
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    Registered User wrx wagone's Avatar
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    You're most likely hearing valve tap until the oil pump builds enough pressure in the hydraulic lifters to make it shut up. Actually a thinner oil would help in the cold.
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    Admiral Ackbar the 1st mycologist's Avatar
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    Quote Originally Posted by wrx wagone View Post
    You're most likely hearing valve tap until the oil pump builds enough pressure in the hydraulic lifters to make it shut up. Actually a thinner oil would help in the cold.
    Good to know. I run 5w-30 synthetic and never bothered trying a thicker oil.
    "From a little spark may burst a mighty flame." - Dante
    "The stitch is lost unless the thread is knotted." - Italian proverb

  10. #9
    Registered User wrx wagone's Avatar
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    Quote Originally Posted by mycologist View Post
    Good to know. I run 5w-30 synthetic and never bothered trying a thicker oil.
    Even a 10w-30 should be fine in your climate.
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