06 Sonata LX slow oil drip

Discussion in 'Hyundai Sonata' started by mbleisch, Jul 29, 2007.

  1. mbleisch

    mbleisch Guest

    I personally change the oil in my 06 Sonata LX. My last oil change I
    noticed a slow, small drip coming from the drain plug. The drain plug
    could not be tightended any further (trust me, it's not over
    tightened), so I thought it was the crushing washer. I just changed
    it again yesterday morning, and it still drips, even with a new
    washer. It's not cross threaded no metal shards. I get the washer
    from the dealer, is it possible it's too thick? Not the right
    material? Help! This is absolutely frustrating!

    mbleisch, Jul 29, 2007
  2. mbleisch

    Matt Whiting Guest

    Did you tighten the plug using a torque wrench? The only ways I can
    think of that a leak could occur are:

    1. Plug not tight enough
    2. Plug not sealing squarely (implies cross threading)
    3. Serious nick on the oil pan sealing surface
    4. Serious nick on the plug sealing surface
    5. Serious nick on the crush washer

    If you are sure it isn't 1, 2 or 5, then you need to remove the plug,
    which means draining the oil unfortunately, and using a bright light
    carefully inspect the sealing surfaces on both the oil pan and plug
    looking for a nick or bump that is preventing an oil-tight seal.

    Matt Whiting, Jul 29, 2007
  3. mbleisch

    mbleisch Guest

    Matt W.

    I recall somewhere in the Hyundai manuals there is a tourque rating
    spec for the drain plug, however, never in my 10+ years of doing my
    own automotive work have I ever put a tourque wrench on a oil drain
    plug, but I will try it. This is my 5th oil change for my Sonata,
    I've done all five oil changes myself, and the drip never started
    until the 4th oil change. The nicks are a good point. Thanks!

    -Matt B
    mbleisch, Jul 30, 2007
  4. mbleisch

    Matt Whiting Guest

    What got me wondering was you said that "it could not be tightened any
    further", but you also said it was not overtightened. The only way to
    be sure it isn't overtightened is to use a torque wrench. And it can
    always be tightened further! It may strip, but it can always be
    tightened more. :)

    Matt Whiting, Jul 30, 2007
  5. mbleisch

    hyundaitech Guest

    The sealing washers have been redesigned. The older ones were about 1mm
    thick and would squeeze out the side if overtightened, causing a leak.
    The newer ones are about 2mm thick and don't squeeze as easily due to the
    additional material. It's possible you may need to tighten the drain plug
    a little more than you did before. Also, with the thicker washer, there's
    a greater possibility that a problem with nonparallel surfaces will cause
    a leak.
    hyundaitech, Jul 30, 2007
  6. mbleisch

    Dan K Guest

    After you get it figured out, on the next oil change put in a Fram Sure
    Drain oil drain plug with a drain valve. You won't have to unscrew the oil
    plug ever again. No more crush washers to worry about. They are under $10.
    Available at Fleet Farm. I've got one on both my XG350's and they work
    great. Ideal for someone who changes his own oil.

    Dan K, Jul 30, 2007
  7. mbleisch

    Deck Guest

    Fleet Farm upper midwest...how about somewhere that serves the USA...Pep
    Boys? JC Whitney?
    Deck, Jul 31, 2007
  8. mbleisch

    mbleisch Guest

    Hyundaitech - I thought the washers looked thicker. Looks like I will
    have to jack the car up drain the oil and take a closer look at the
    drain plug area, and put a tourque wrench on it. And see what
    happens. If that doesn't fix it.....looks like it's going to the
    dealership. Would this be covered under warranty? (My thought is no).
    mbleisch, Jul 31, 2007
  9. mbleisch

    shortspark Guest

    Fumoto valve, even better than Fram. Do it the first time, do it right
    and you are set for the rest of the car's life.

    shortspark, Jul 31, 2007
  10. mbleisch

    Bob Adkins Guest

    Try a thick copper washer. They're practically permanent, and
    compensate for a little out-of-parallel or burrs on the plug or oil
    pan. I think you can get a nice assortment from Harbor Freight for ~5


    Bob Adkins, Jul 31, 2007
  11. mbleisch

    hyundaitech Guest

    It'd depend on the problem. If there's a factory defect in anything other
    than the washer, you should be good for warranty.
    hyundaitech, Jul 31, 2007
  12. mbleisch

    Matt Whiting Guest

    Probably because aluminum is cheaper. I'm not sure why copper would be
    any better for compensating for out-of-parallel or burrs as the hardness
    is similar (depending on which alloys of course) between the two metals.

    Matt Whiting, Aug 1, 2007
  13. mbleisch

    Bob Guest

    Actually, while you're in Harbor Freight, buy a torque wrench for $16.00. I
    was surprised how tight 30 Ft-Lbs seemed when tightening the plug.
    Bob, Aug 1, 2007
  14. mbleisch

    Bob Adkins Guest

    I don't really care which is best. I just like copper better because
    of the color and flavor. Aluminum sets my teeth on edge. ;)

    All kidding aside, I agree that soft Al is an excellent material for
    throw-away gaskets. However, I don't trust it for reusable gaskets
    because of the way it's subject to fatigue cracking.

    You're right that Al cheaper than Cu. That could save you and me about
    ..01 per washer I guess. Hey, a penny saved...

    Bob Adkins, Aug 5, 2007
  15. mbleisch

    Matt Whiting Guest

    I doubt it saves us anything! But if it saves Hyundai $0.01 per washer
    and they sell a million a year, it begins to add up! :)

    Matt Whiting, Aug 6, 2007
  16. mbleisch

    Deck Guest

    Harbor Freight....now there's a man after my own heart!!
    Deck, Aug 11, 2007
  17. mbleisch

    Matt Whiting Guest

    With a $16 Harbor Freight torque wrench, you may be getting 20 ft-lbs or
    40 ft-lbs, so it may actually be a lot tighter than you think! :)
    A torque wrench is one tool that shouldn't be skimped on quality-wise
    and most Harbor Freight stuff is quite simply ... junk.

    Matt Whiting, Aug 11, 2007
  18. mbleisch

    Deck Guest

    yes but it is CHEAP junk....I have a set of Sears torques and the harbor
    freight ones read the same to me!
    Deck, Aug 11, 2007
  19. mbleisch

    Matt Whiting Guest

    That is true. I bought from them once and once was enough. There are
    few things I despise more than shoddy tools.

    Matt Whiting, Aug 11, 2007
  20. mbleisch

    Bob Adkins Guest

    There are some excellent deals at HF if you're an astute tool man.

    For example, their wood chisels have better steel than any American
    chisels I have found so far.

    Their air tools are a fabulous bargain. You can buy 5 air ratchets for
    the price of 1 Ingersoll Rand ratchet. The IR will last maybe 15 years
    of hard use, the HF will last maybe half that long, but work just as
    well. That still makes them a great bargain.

    Their pliers are poorly designed junk, although the steel is pretty
    good. Neither do I like their ratchets and sockets. Their jumbo
    sockets are available singly, and 1/10th the price of Snapon. They are
    quite serviceable.

    Their jumbo wrenches are as good as any, and 1/5 the price of Snapon.

    Bob Adkins, Aug 13, 2007
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