dnewton3
Staff member
I will speak to the topic of judging wear, not contamination, etc.
Maybe read this and you'll understand better:
https://bobistheoilguy.com/used-oil-analysis-how-to-decide-what-is-normal/
Five samples is an inadequate amount of data to establish any sense of understanding of normal wear. Trends do NOT indicate normal behavior; they indicate changes are still occurring. Small sample-sets of anything are subject to wildly inaccurate standard deviation calculation results, and to come to any other conclusion is purely laughable.The proper way of doing it is 5 oci consecutive changes and have a steady trend analysis.
Two OCIs is proof of nothing in terms of wear. It's ludicrous to even suggest that two samples is adequate for anything. Sure you can "see differences", but that doesn't make it correct to come to any conclusions worthy of trusting.A uoa can show differences and which oil doing better and how long you can go. You can still see difference with 2 oci changes.
LSJr. is a tribologist, not a trained statistician. I doubt he has any reasonable understanding of how to analyze data sets in terms of statistical analysis. He's an oil nerd, not a numbers nerd. So placing your faith in him is a choice, but perhaps not the best one to make.This has come from lake speed jr himself so I definitely trust what he says over anyone here. Lake even did uoas on his daughter’s car during break in to get wear as low as possible.
Absolutely your prerogative to do so.Definitely gonna have to agree to disagree on this one respectively.
Maybe read this and you'll understand better:
https://bobistheoilguy.com/used-oil-analysis-how-to-decide-what-is-normal/