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oil on top of my engine V70-XC70 1999

posted by  David in NC on  Thu Jun 20 14:57 CST 2013
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last visit: Tue May 27 16:22 CST 2014
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I removed the belt cover on my NA engine to change the thermostat and saw some oil puddling on top of the engine. I thought it was blow-by from the oil fill cap. But I thought I should check with you guys.

Some time ago I noticed that the cap was leaking and bought and installed a new gasket. I thought I had cured the problem.

What should I look for?

Thanks








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    oil on top of my engine V70-XC70 1999

    posted by  james_a_sousa on  Fri Jun 21 21:25 CST 2013
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    All three of our 850s had some oil on top of them, one had a LOT.

    I cleaned them off and always used a rag to guard against spills when adding oil.

    I even checked the top of the engine after oil changes - once, the technician did spill some oil.

    They did stay clean for the 10 or 11 years that we owned the cars.

    I did check the filler cap gaskets once and a while - I think I changed them every three years or so.

    On one car, I bent the ears on the oil filler cap so that it would fit snugly.








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    oil on top of my engine V70-XC70 1999

    posted by  TimeToBakeTheDonuts on  Thu Jun 20 18:17 CST 2013
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    Have you checked to see if there is positive pressure at the cap (shouldn't be). Here is one thread that discusses an oil cap leak in an NA engine - not sure if the suggested solution applies to the 1999. Others who know more about this will chime in, but checking whether you have vacuum or positive pressure is a good place to start. Also at the dip stick tube.
    http://www.brickboard.com/AWD/volvo/1532289/V70-XC70/failed_lower_right_motor_mount_oil_leaking_ohoh.html







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