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Official UOA thread with oil poll

Discussion in 'SVT Shelby GT500' started by UnleashedBeast, Jul 25, 2011.

What oil are you currently using in your Shelby 5.4L?

Poll closed Aug 30, 2017.
  1. Motorcraft 5W-50

    35.9%
  2. Castrol 5W-50

    14.7%
  3. Pennzoil 5W-50

    0.7%
  4. Mobil 1 5W-50

    8.5%
  5. Mobil 1 15W-50

    1.1%
  6. Red Line 5W-50

    8.5%
  7. Amsoil 10W-40

    20.0%
  8. Amsoil 10W-30

    4.2%
  9. Other (post what you are using)

    6.5%
  1. UnleashedBeast

    UnleashedBeast Engine Lubrication Guru Established Member

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    Those are the samples I really want to see. I haven't updated the list in a while, was hoping people would send me trends of the new blends.
     
  2. DaFreak

    DaFreak Active Member Established Member

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    Amsoil 0-40W sample ships tomorrow. Should have numbers in about a week.
     
  3. UnleashedBeast

    UnleashedBeast Engine Lubrication Guru Established Member

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    Excellent, I want to see this. Thank you!
     
  4. DaFreak

    DaFreak Active Member Established Member

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    Amsoil 0-40w OA

    Thanks for compiling! There was mention of make-up oil in the tech comments.

    image_zpsbadpknbo.png
     
    Last edited: Jul 2, 2016
  5. merkyworks

    merkyworks Well-Known Member Established Member

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    For those of us that are not oil analysis experts are these number good, bad or average? :shrug:

    Want to switch to 0W40 but want to make sure the data supports the change.
     
    Last edited: Jul 6, 2016
  6. DaFreak

    DaFreak Active Member Established Member

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    I hear ya, I am hoping UB will elaborate soon.
     
  7. DaFreak

    DaFreak Active Member Established Member

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    Been looking at this more. All the element #'s look fine, but the viscosity numbers look a bit low in comparison to others.
     
  8. merkyworks

    merkyworks Well-Known Member Established Member

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    If I understand viscosity correctly, low viscosity means it flows easier, does this mean then the oil weight is thinner? So the oil weight broke down and the indication of this is low viscosity.
     
  9. DaFreak

    DaFreak Active Member Established Member

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    According to amsoil - http://www.amsoil.com/lit/databulletins/g2880.pdf Kinematic Viscosity @ 100ºC for the 0W-40 (AZF) starts at 14.8. The question I would like to know is: What is the ideal viscosity for our (stockish) motors?????
     
  10. UnleashedBeast

    UnleashedBeast Engine Lubrication Guru Established Member

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    Experts would say it's more biased on HT/HS than on Kinematic Viscosity. I'd say 3.5 cP is more than ideal for a street driven car with a stock thermostat. For a HPDE car, you'd want greater than 4 cP.

    I've seen Motorcraft shear down to 10.x cSt before, virgin it was 19.x cSt or greater.

    Appears Amsoil 0W-40 is shearing to a heavy 30 grade lubricant, as I expected from a lubricant with a wide multi-viscosity. No concerns, as I was running a mid 30 grade viscosity in my GT500 for thousands of miles with excellent results. Wear metals from the sample above are beautiful, I'd be smiling if that was my engine. Keep using Amsoil AZF 0W-40 for street use only. For HPDE, please use Amsoil AMR 5W-50.
     
    Last edited: Jul 29, 2016
  11. Blackmax

    Blackmax New Member Established Member

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    I'm now using Driven XP 9 , supposed to be best oil for high boost engines.
     
  12. DaFreak

    DaFreak Active Member Established Member

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    Thanks UB, your review and compilation is most appreciated.

    One question about cP, how do you determine the final cP # from the oil analysis sheet? Looks like Amsoil shows a starting # of 3.9cP for the AZF 0W-40
     
    Last edited: Aug 1, 2016
  13. usafimj

    usafimj Active Member Established Member

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    As a soon to be new GT500 owner this is the thread I was exactly looking for. Info regarding a complete fluid change for a fresh start.

    Thanks to all who put this info together
     
  14. SlowYellow

    SlowYellow Member Established Member

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    So is the 0W-40 still the recommendation for our cars nowadays? Strictly a street driven car, no track time. Maybe a little fun on the street, but that's about it.
     
  15. UnleashedBeast

    UnleashedBeast Engine Lubrication Guru Established Member

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    For street and strip use only, Amsoil AZF 0W-40

    For HPDE or fear of using anything else, Amsoil AMR 5W-50

    Oil Filter - Amsoil EaO11
     
  16. SlowYellow

    SlowYellow Member Established Member

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    Good. I got it right! Recently changed with the 0W-40. Thanks.
     
  17. Kenneth

    Kenneth Active Member Established Member

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    I've been running 10W30 in my car for the last couple years. VMP Gen 2 TVS 18 psi. boost.
    Street driven with fun runs in Mexico sometimes.

    Should I switch to the AZF 0W-40 or keep using 10W 30


    Sent from my iPhone using the svtperformance.com mobile app
     
  18. A I 79 DXB

    A I 79 DXB New Member Established Member

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    Attached Files:

  19. UnleashedBeast

    UnleashedBeast Engine Lubrication Guru Established Member

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    With that cooler thermostat, it's not required to change. I ran 10W-30 in my 2009 GT500 for years.
     
    Kenneth likes this.
  20. usafimj

    usafimj Active Member Established Member

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    Is there going to be an updated list for 2017?
     

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