proper SAE grade for 2005 XG350

Discussion in 'Hyundai Grandeur / Azera / XG' started by Seamus J. Wilson, May 10, 2007.

  1. The owner's manual shows 5W-20. 5W-30 or 10W-30 as appropriate weights.
    When I access the hmaservice.com site it show 20W-50 for elevated
    temperatures.
    Why the discrepancy, why the difference and what weight is suited for
    115-120F AZ desert temperatures?
    Thank you,
    Seamus J. Wilson
     
    Seamus J. Wilson, May 10, 2007
    #1
  2. Yes, I have the same engine in my 2005 Kia Sedona minivan. When I bought it
    new, I looked over the recommended oil viscosity chart, and I commented to
    the service tech, "I haven't seen a chart like this since the 1970's. No
    one does this anymore."

    The recommended viscosity for hot weather is my Sedona is supposedly 15W40.

    However, I have always run 5W30 synthetic year round, and everything has
    worked out fine. If one had a concern (like hot Arizona weather), I might
    be talked into going as high as 10W40, but I can't really believe you would
    want to put 5W30 and 20W50 in the same engine.

    My question is, what have you been putting in it up until now? My hunch is
    that your engine will continue to do well with whatever you have been doing.
    Keep the oil changed (that engine seems to need frequent oil changes), and
    you will do fine.

    Hope this helps!
     
    Rev. Tom Wenndt, May 10, 2007
    #2
  3. Seamus J. Wilson

    ']['unez Guest

    Seamus, I have a 2005 XG350L and have used 10W-30 Mobil 1 since I have owned
    it, I live in Las Vegas so we have basically the same weather.

    ']['unez
     
    ']['unez, May 10, 2007
    #3
  4. Seamus J. Wilson

    Steve R. Guest

    Seamus,

    I live in NW AZ and as Tunez mentioned, we have the same weather.

    My dealer uses Castrol GTX 10W30 for our climate, which is starting to warm
    up. Been using the same oil in
    both Sonatas 2002 and 2006 since we bought them new.

    Flew back into Vegas last night from a business trip and it was 96 at 8PM!

    Steve
     
    Steve R., May 10, 2007
    #4
  5. Seamus J. Wilson

    Matt Whiting Guest

    Does the owners manual show a temperature range for the recommended
    viscosities? My recollection is that 10W-30 is good for at least 100F,
    but I can't remember if it goes above that. Most owners manuals for
    cars I've owned show a temperature range chart for each recommended
    viscosity, but I can't remember if my Sonata did or not.

    Matt
     
    Matt Whiting, May 10, 2007
    #5
  6. Matt,
    The owner's manual only shows SAE grades, no temperature charts or
    references.
    Best and thanks for reply,
    Seamus J.
     
    Seamus J. Wilson, May 10, 2007
    #6
  7. Seamus J. Wilson

    Matt Whiting Guest

    That is unfortunate. I can't believe you need 20W-50, but I'm not going
    to argue with hmaservice. Personally, I'd use a 10W-30 full synthetic
    and not worry about it.

    Matt
     
    Matt Whiting, May 11, 2007
    #7
  8. Seamus J. Wilson

    billyboy24d Guest

    I would almost never recomend putting 20-50 in your car. I don't care
    if the dealer said it's ok, or Hyundai. As a mechanic I have seen
    many people (including other mechanics) make this mistake. Thick oil
    like 20-50 is for deisel engines and heavy machines that have a lot
    more internal slop. Our car engines have tighter tolerances (unless
    their old and high milage) and because the oil is thicker, it will
    cause elevated oil pressure wich is fine for the metal but murder on
    seals. It could cause your engine to develop leaks and possibly start
    burning the oil. If you want to go with a higher range,10-30 should be
    more then enough. That being said, It's your car, put in what you
    want.

    Bill
     
    billyboy24d, May 11, 2007
    #8
  9. Thank you all for the helpful advice.
    Best,
    Seamus J.
     
    Seamus J. Wilson, May 11, 2007
    #9
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