Originally Posted By: JOD
Originally Posted By: Gary Allan
Quote:
This is a pretty standard definition of "wear", in any sense. While it seems like parsing words, using imprecise language to explain any concept just results in confusion.
Can you link to the definition and where the consensus of opinion lies?
I don't want to beat a dead horse...even more...but since I don't want to ignore your question, I'll just give you the light reading from
Dorinson and Ludema:
Basically, it describes "wear" as "loss of material from mechanical action". No, I'm not suggesting you read the whole chapter defining "wear". In both engineering and daily words, that's a commonly accepted definition.
Originally Posted By: Gary Allan
I think that you're splitting hairs ..and that's surely your prerogative ...but I really don't see the need nor the purpose of (something like) Teutonic anal spiffy jargon to state your case here....
Again, the whole question here is about whether it's harmful or not ..and if pressed ...I would clearly define that as "harmful to the user in an "all odds of probability" scenario of effecting utility of the said engine over many typical chassis lifetimes ..and not SIGNIFICANTLY altering the life span of an exceptional chassis age in terms of time/miles.
I agree, it may seem like it's semantics, but let's not forget the origin of the question. A wear particle typically shows up in higher (yet seemingly inconsequential) numbers consistently in UOA's. I think it's overly dismissive (and completely inaccurate) to say "that's not wear". Yes, it's wear. That's why I think it's important to make the distinction. Sorry if that seems overly anal.
And yes, I agree that it's important to then put the question in proper context, so people can make an informed choice. That's it. I agree completely with your conclusions. I have no pro or anti XOM bias, I'm not trying to convince anyone to use it or not to use it.
You seem to be stuck on "is it wear?" I don't get the impression that people are saying that it is not wear, rather that if the particles formed during M1 usage are of a different size than with some other oil, they may be of a size that shows up on a UOA more readily. This given that a UOA does not tell the whole story of iron in the oil, just the amount of iron of a particular size range present.