Search results

  1. 1

    Iron in M1 UOA's?

    Anyway, not trying to whitewash Mobil as they obviously screwed up big time with the synthetic aviation oil, which shows that they can do it again. I place more weight on OEM factory fills and approvals, obviously more than on a collection of UOAs. Looking back over this thread I see that I'm...
  2. 1

    Louder valve train with m1 ep

    Is the noise from hydraulic lifters ? If so it seems that it would possibly be worse with a cold engine. For me Delvac 1 makes the Cummins in the Dodge quieter. M1 5w30 T&S seemed quiter than the MC 5w20 that I used during warranty in the 2006 Taurus, it's quiet in the 99 Taurus and in my son's...
  3. 1

    Old binoculars

    Typical older Japanese 7x35. If they're still collimated, not tool loose, focus them carefully and check the optics for sharpness and flare. Thet'll be single coated but some can be surprisingly sharp. I use to look for models like those in garage sales so that each vehicle had a pair, not...
  4. 1

    Iron in M1 UOA's?

    This has been posted before, it's from the Mobil 1 site and is a list of vehicles where M1 is a factory fill. I don't see a list of approved use by make, which will be longer. Why are these makers using an inferior oil, one that doesn't have lower wear metals ? Why don't these makers just do a...
  5. 1

    Iron in M1 UOA's?

    "..but the question was would 1sttruck (or you for that matter) continue to use an oil that produced substantially higher numbers when others did not? Long enough to eliminate all the picked nits that he came up with for their possible origins??" I have already answered that; I would use an oil...
  6. 1

    Cummins diesel engines

    The last time that I visisted a GM truck site the FAQ on the Allison started off with a statement that due to it's complexity there would be more failures associated with it. Kind of like the TV ads about some wonder drug that has a few side effects like liver failure, blindess, etc. One...
  7. 1

    Iron in M1 UOA's?

    "Suppose RLI was the factory fill and recommended fluid for use. If he then switched to M1 0w-40 and saw spikes in Fe to the degree that he does (beyond some sensible standard deviation from "noise"), what would be your sensible conclusion?? " No different than stated. The 'standard...
  8. 1

    Iron in M1 UOA's?

    Looks like bearing shells are being dispensed with. I'd expect higher 'wear in' on the thrust bearing(s) than on the bearing journals. Since the area is a lot less than what would be on a cylinder liner it's still not clear wha twould be the larges tsource if Fe, the timing chains or the crank...
  9. 1

    Are Craftsman jack stands better than any other?

    <a href="http://forums.pelicanparts.com/showthread.php?t=339127" target="_blank">http://forums.pelicanparts.com/showthread.php?t=339127</a> Jack stand accident while under a Porsche....
  10. 1

    Iron in M1 UOA's?

    "Where you have issues with is determination of the engine model reference wear rate, and the statistical significance of it's determination." I have issues with using engine UOA results to do more than determine if a specific engine is having an issue. Even large sample sizes won't address...
  11. 1

    Iron in M1 UOA's?

    "...For an engine that has an aluminum block, aluminum cylinder walls, and a high percentage of other aluminum components, there are few sources of Fe other than bearing material. In this particular engine, the Audi RS4, if Fe is not correlated to wear, then what pray tell is your theory about...
  12. 1

    Iron in M1 UOA's?

    ".... In my case for the study I reference, the UOA's were not $20, as they were done through Terry's ISO certified lab, which has correlation to ASTM reference standards. " It wouldn't matter if NIST had performed the measurements, it's the perception that 'science' is being performed because...
  13. 1

    Are Craftsman jack stands better than any other?

    We've had big, really big things fall off of trucks around here, and when crews came out get the loads back on trucks they wood for blocking. It seems to be commonly used.
  14. 1

    Iron in M1 UOA's?

    As kind of a summary, statistics basically allows one to make better bets, but one needs to be careful about the assumptions used. Significance is only important when one needs to be more confident about the bet that one is making, due to high costs, bad failure modes, life, limb, etc. If there...
  15. 1

    One very cool video

    Cuba does better in some aspects of basic health care than the US. Remarkable that they've held out as long as they have, and how many administrations that Castro has seen come and go.
  16. 1

    Six dead in nursing home shooting

    Now it's starting to make sense, the shooter's estranged wife appears to have worked there..... <a href="http://www.msnbc.msn.com/id/29944382/" target="_blank">http://www.msnbc.msn.com/id/29944382/</a> Investigators are looking into whether a gunman accused of killing eight people in a North...
  17. 1

    Iron in M1 UOA's?

    "I've calculated the variations as proposed in the article and they are less than the variations that we measure." I guess this explains as well as anything else about how credible your conclusions are, as the article doesn't mention anything about dealing with variation due to sample size...
  18. 1

    Six dead in nursing home shooting

    Seems like he planned it. Probably just a ditto head doing his duty to fight againt health care porkulus. <a href="http://www.forbes.com/feeds/ap/2009/03/29/ap6227067.html" target="_blank">http://www.forbes.com/feeds/ap/2009/03/29/ap6227067.html</a> While authorities declined to comment on a...
  19. 1

    Iron in M1 UOA's?

    "For the case of Fe it's a slam dunk for RLI Biosyn in this engine. It just plain comes in with 2X to 3X less wear, well outside the error bounds of the measurement variation." If you're talking about the Audi data that you've posted previously then no, no slam dunk, as the data has the same...
  20. 1

    Iron in M1 UOA's?

    "The problem is not in the use of UOA, but rather in the sampling methodology used. However, with enough data on individual engine types, even these issues can be overcome, and used to perform interpretation that is well beyond the margins of error and quite valid. We've done that fairly...
Top