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Oil Analysis

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by Cadenza, Dec 17, 2014.

  1. Cadenza

    Cadenza Member

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    6/26/2015: 2nd UOA update at Post 13 below...

    Hi PC'ers -

    My first Used Oil Analysis (UOA) by Blackstone. The car was purchased a few months ago with 124k miles on the clock. This batch of oil is from the previous owner and has 6200 miles. There was a bit of shearing but I'm surprised by the result... considering the oil change was done by Jiffy Lube. Naturally, the tech over-torqued the pan plug to 46 ft-lbs!!! Good thing it wasn't stripped.

    Some details...
    Oil: 76 Super Synthetic Blend 5w30... Specs: API Service SN, ILSAC GF-5
    Filtration: Oil (6.2k) Mileguard brand, Air (20k) unknown brand
    Original spark plugs and PCV valve.

    [​IMG]

    [​IMG]
     
    #1 Cadenza, Dec 17, 2014
    Last edited: Jun 26, 2015
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  2. uart

    uart Senior Member

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    Great results Cadenza. :)

    It's nice to see that the Prius can get essentually flawless oil analysis results on a 10,000 km interval with just a basic SN/GF5 synth blend. Fantastic! :D
     
  3. edthefox5

    edthefox5 Senior Member

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    That is a very good report. Very odd as it shows really no wear whatsoever nor any depletion of the life pack. Nor any fuel. That's really strange.
    Its some crazy good oil there!!

    Now do the trans fluid next. If its original it won't be good. And add it to the trans sticky we got going up top in the GII forum.

    I use:

    wearcheck.com

    there $25 and they include the TAN report for free. Total Acid Number is very important I want to see how the life span of the oil is in that specific application. Its extremely important number when analyzing a Prius trans fluid.

    Jiffy has lost so many engines over the years with pan bolts coming loose Corp beat it in there heads to put the bolt on!! But like another thread I saw here taken over the years how many successful oil changes they have done divided by bolts falling out its a quite small number. But there still sketchy. I use them but stand right there and watch them. My local Jiffy has it in his computer the G2 takes 5 quarts of oil after a new filter.
    The guy tells me this and I said great today your putting in 3.5.
    I usually duke the kid underneath not to go crazy on the pan bolt.
     
  4. Yakoma

    Yakoma Active Member

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    Ed, I went to wearcheck.com but it appears to be commercially oriented. I could find no consumer information regarding testing, pricing, etc.
     
  5. GregP507

    GregP507 Senior Member

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    I find their honesty refreshing; "Try 8,000 miles on the oil next time." Personally, in past vehicles, I've gone as much as 30,000 miles between oil changes using synthetic, with no apparent ill-effects.

    It's understandable for nearly everyone in the business of servicing cars to be erring on the side of caution, and recommending more-frequent oil changes. My dealer recommends an oil change every 5000 miles (8000 kms) which is fine, and its probably marginally better for the car than changing it every 10,000 miles, but more cynically, it gives them more opportunities to sell me more servicing, each time I come in. When I'm no longer getting free oil changes from my dealer, I plan to double the oil-change interval to 10,000 miles (at least).
     
  6. edthefox5

    edthefox5 Senior Member

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    They have been joined together with Lubrigard which is the stuff they go crazy for over at Bitog.
    Its now Wearcheck & Lubrigard.
    They list an 800 number. Call them and check the price and if they still offer TAN.

    Lubrigard Industrial Supply About Lubrigard Industrial Supply
     
  7. Cadenza

    Cadenza Member

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    I too find the numbers low... maybe Blackstone is slightly off. The oil is known to be of good quality among BITOG'ers. Some reported better results than Mobil 1 5w-30.

    The transmission fluid was changed at 32k and 100k. I'll do a drain/refill sometime in the Spring.
     
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  8. Cadenza

    Cadenza Member

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    30k... Wow!!! I've seen 20-25k but never 30k.
     
  9. GregP507

    GregP507 Senior Member

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    I'm not recommending it, but it has happened to me, and I never saw any evidence that caused me regret.
     
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  10. uart

    uart Senior Member

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    Or maybe there's someone else who is just now getting their *virgin* oil analysis results back from Blackstone and saying Wth is it with these wear metals here! ;)

    Did you ever the classic old Bette Middler movie "Big Business", where in the opening scene there's a slightly dotty nurse collecting urine samples and at the same time handing out glasses of apple juice to patients. Just saying. :D
     
    #10 uart, Dec 20, 2014
    Last edited: Dec 20, 2014
  11. GregP507

    GregP507 Senior Member

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    Since no oil is perfect, even synthetic oil, metal will wear. The oil analysis is only a tool to predict when the engine will fail.
     
  12. Cadenza

    Cadenza Member

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    Hilarious... that's quite possible.
     
  13. Cadenza

    Cadenza Member

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    Second UOA 9.4k using NAPA Synthetic 5w-30 and 150mL of Moly additive, NAPA Gold filter (WIX). NAPA Synthetic is the same oil as Valvoline PowerSyn with a weaker Additive Package. Car is daily driver with 34mi round trip and some weekend stop-n-go driving... about 80% hiway / 20% city.

    PRIUS_UOA_9.4k-@-137k.jpg
     
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  14. bisco

    bisco cookie crumbler

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    are you starting to burn oil?
     
  15. uart

    uart Senior Member

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    That's a super nice UOA there Cadenza. The wear metals almost look like a VOA. :D

    BTW. What was the moly additive that you used? I'm guessing it was about half a bottle of the Liqui moly "MoS2" product. Is that correct?
     
  16. Cadenza

    Cadenza Member

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    There was oil consumption in the first batch but it was not enough to top off. At 6.2k the oil was at the half-point on the dipstick. For the 2nd batch, I topped it off at around 5.5k so the additives would get some use and taper off by 9k. The current batch has 4k already and the oil is about 1/4" down from the top mark. If it doesn't need more than 1/2 Qt during this interval, I would be happy since 3k of the 4k was done during a long trip through Zion, Bryce, Yellowstone and the Grand Teton... climbed lots of hills and passes.

    I wonder if switching from dino to synthetic oil causes more consumption, which was the case with my 2001 VW and 2006 MINI Cooper engines.
     
    #16 Cadenza, Jun 27, 2015
    Last edited: Jun 27, 2015
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  17. Cadenza

    Cadenza Member

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    Yeah, I hope the tech at Blackstone didn't take a nap a second time.

    You're correct on the Moly. I use 1/2 a bottle for each of my 4-cylinder cars.
     
  18. uart

    uart Senior Member

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    I do exactly the same here Cadenza, half a bottle of the MoS2 treatment each oil change on my cars too. :) I know that a lot of oil additives are snake oil, but MoS2 is one of the few that I really believe in.

    When I was young and foolish I drove an old madza 323 over a 1000 km (interstate and back) with a completely failed oil pump (half of the pump housing was sitting in the bottom of the sump when they opened it up) and zero oil pressure. Yeah I know it was a dumb thing to do, the idiot light came on but the dipstick said full so I assumed it was just a dead sender and kept going. :eek:

    To this day no one can fathom how that engine survived, but I had a tube of an additive called "Molybond" (basically the same thing as the liquimoly stuff) in there and that is the only thing that I can put it down to. Oh the engine was never quite the same of course, it used a bit of oil afterwards and would blow a small puff of smoke if you accelerated hard after it had been idling for a while. But just the fact that it did keep on going is pretty mind boggling to me!
     
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  19. Cadenza

    Cadenza Member

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    uart - you've got good Car'ma.

    If the MoS2 is effective in this engine, it would be evident in the next UOA. Three of the last 4000 miles were driven in very mountainous terrain, reaching almost 11,000 ft above sea level. Several times a day the SOC (HV battery) dropped down to 1 bar and the ICE was on its own. I'm planning a trip to Yosemite in the Fall, which is at ~7200 ft. So roughly 40% of the 10k would be mountain driving.
     
  20. uart

    uart Senior Member

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    Me thinks that your traction battery will "throw in the towel" long before your engine ever gives out. :)
     
    #20 uart, Jun 27, 2015
    Last edited: Jun 27, 2015