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40K UOA Result

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by Dark_matter_doesn't, Jul 31, 2012.

  1. Dark_matter_doesn't

    Dark_matter_doesn't Prius Tinkerer

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    Mobil 1 0W-20 oil, TRD synthetic oil filter. I goofed and left off the total miles, and there was no oil added. The tests at 15K and 25K were based on samples taken thru the dipstick tube & weren't full oil changes. I've posted the earlier samples on this site previously.

    [​IMG]
     
    #1 Dark_matter_doesn't, Jul 31, 2012
    pjksr02 and jjPrius like this.
  2. xs650

    xs650 Senior Member

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    Did you change which oil you were using on the last change? The Mg is several times higher and the Ca, Zn and P lower on the last change.
     
    #2 xs650, Jul 31, 2012
  3. Dark_matter_doesn't

    Dark_matter_doesn't Prius Tinkerer

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    Always Mobil 1 0W20. That change in Mg is interesting. I'll send a question to Blackstone about why it may have changed so much.

    Update: Blackstone labs said that Mobil 1 has been recently reformulated, and they've added more Mg. I have a bunch of Mobil 1 0W-20 from past springtime sales, and I may have used some of the newer stock than the older stuff. So it goes.
     
    #3 Dark_matter_doesn't, Aug 1, 2012
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