oil leak on 1999 passat
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  1. #1
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    oil leak on 1999 passat

    i have a 99 volkswagen passat and it has a bad oil leak out of no where..........any suggestions on what it may be and how to fix...assuming that it might not be a big problem I hope....

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  3. #2
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    could be bad seals on the head gas? how many miles are on it

  4. #3
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    which motor? I've heard valve cover gaskets are common for leaking on the V-6 in the two days I've owned mine. Mine leaks too, btw.

  5. #4
    PZ
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    If it's a bad leak, it may be the oil cooler. The seal blows out and oil pours out fast.

  6. #5
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    To add to the question. I Have a 99 1.8t and the oil leaks bad.

    Now I'll explain in hope of some insight from some one educated in the field.
    I am 99% + that oil is leaking from the top of the oil filter. Or I hope.
    The filter drips oil.. I have oiled the filter gasket. Cleaned and oiled all around the place the filter screws on to.. Changed OIL from Synthetic Mobile 1 5w 30 to Castrol regular 5w 30. I have changer Filter brands and sizes.....

    I noticed it looks like oil leaks out of where the dip stick straw goes into the engine.
    If I wiggle it, oil seeps out. No It is not easy to wiggle.

    Could it be possible I cockeyed the threads on the filter mount while removing a stuck filter. That is the only thing I can think of.... I did have to use a filter wrench a while back for a stuck filter.....

    Has anyone else had this problem?
    Is it possible I a filling the oil up too much?
    Could the dip stick have been pushed up in the handle causing it to shorten?
    I do not see an oil light come on ever.... But the Dip reads low and has read almost
    zero...I had to buy some lawn mower 30w Oil today at Lowes just so I could get home.

    It leaks up to 2 qrts a day.....


    Synthetic was started when I bought the car @ 80k.... Who know before that.
    I used Syn for 80k miles.

    ANy help is appreciated......
    165k 99 1.8T.
    James,

  7. #6
    (insert title) Moderator Steve in Chicago's Avatar
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    Quote Originally Posted by Selvol View Post
    I Have a 99 1.8t and the oil leaks bad.
    I am 99% + that oil is leaking from the top of the oil filter.
    Could it be possible I cockeyed the threads on the filter mount while removing a stuck filter. That is the only thing I can think of.... I did have to use a filter wrench a while back for a stuck filter.....
    It leaks up to 2 qrts a day.....
    The oil filter connects up to the bottom of the oil cooler. This junction is sealed by the oil filter gasket. You get a new gasket attached to every new filter that goes on. Always make sure the old gasket comes off with the old filter. Sometimes the old gasket will stick to the mount and you end up with a double gasket and a leak in the pressurized section of the oil system.

    Above the oil filter is the oil cooler. The cooler is mounted up to a flange on the block with a rubber O-ring as the seal. This seal will go bad over time and produce a leak in the pressurized section of the oil system. It's a common failure. When mine blew out, it dumped to quarts in less than a minute. The O-ring is inexpensive and no harder to change than changing an oil filter. You will need the appropriate size socket or wrench. Do some searches for the procedure. There should be several write-ups floating around.

    Quote Originally Posted by Selvol View Post
    I noticed it looks like oil leaks out of where the dip stick straw goes into the engine. If I wiggle it, oil seeps out.

    Has anyone else had this problem?
    Is it possible I a filling the oil up too much?
    Could the dip stick have been pushed up in the handle causing it to shorten?
    I do not see an oil light come on ever.... But the Dip reads low and has read almost
    zero...I had to buy some lawn mower 30w Oil today at Lowes just so I could get home.
    The dip stick tube is another common fail point. Over time the plastic it's made from gets brittle and cracks. Sometimes it cracks right at the base and you'll need to extract the bottom section without any small chunks of plastic dropping down into the oil pan. The part is relatively inexpensive. If you suspect it's bad, replacing it is cheep insurance. You do NOT want to run the engine with the oil too low or overfilled. Both scenarios can cause expensive damage. The chances of your dip stick getting shorter are pretty low. Do some searches on the subject as there are several threads dealing with this issue and how to resolve it.

  8. #7
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    does the V6 have an oil cooler?

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