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Re: Oil Analysis results (archive)

[ Follow Ups ] [ 3-series (E46) Message Board ] [ Msg. Board FAQ ]

Posted by Jack on September 21, 1999 at 21:20:29:

In Reply to: Re: Oil Analysis results posted by Ausgang on September 21, 1999 at 11:47:12:


: I have a few questions for you if you know or don't mind:

Not at all! After all that's what we're here for (to share info and help eachother out)

: Which tests were conducted? Did the lab list the applicable ASTM designations.

On the summary report I got, the ASTM designations were not listed. When I called the 800# to ask to speak to a tech, they rattled off a huge list of tests that I couldn't comprehend (chemistry is not my strong point). But he assured me that the results are accurate and reliable and that my engine was doing fine.

: Yeah, it falls within the range, but what was the value. How much, if any, had it changed since new?

Well since I didn't tell them the weight of my oil and on the summary report they printed the oil weight of 5W40, I would guess the oil was close to a 5W40 and that's why they printed that as oil weight. (or maybe since they knew the type of car, they could find out the manufacturer recommended weight and print that?)


: : no trace of fuel, water, or antifreeze in oil.

: Totally suspect. This sure sounds like they simply employed a method incapable of detecting these. No used oil can be totally free of these.

My thoughts exactly. The tech said that if it is below a certain level, then they don't bother keeping it in their logs. They just there is no contamination.

: What's 'virtually non-existant' mean? Are we talking PPM or PPB. This sounds like one of those claims from a 50's nuclear test --- i.e. a 'little' exposure.

The numbers I got over the phone were well below what the tech (I guess I have to trust him?) said was normal. but I didn't know to ask if it the units was PPM or PPB (should've asked him).

: It may very well be, but the data they provided to you seems promotional rather than scientific.

Maybe so. hmmm, (now you have me wondering), Is Mobil a reputable company? (that's where I sent the oil to)

: That's useful. You can at least compare them to your current results. Were any tests done to determine the status of the 'conditioners' which are added to the oil. These are what one would expect to 'age' or deteriorate first anyway. I'm not knocking your efforts, just questionning the methods of test, the criteria, and whether the commentary they offer is in keeping with the data. (incomplete or otherwise.)

Nope, none at all.

Jack



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