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Reply to "ZMAX"

I got test data from zMax.

Compared the results to the ASTM specs.

My notes were cleaned into oblivion, they'll turn up one day. Meanwhile a synopsis and some questions.

In all but one test, the results achieved were within the error band of the method. The published zMax value was always higher, but in the error band.

conclusion: Not valid data

I asked specifically why no tests were done on parts from engines.

Answer, they didn't fit in the SEM.

My response. Got a saw?

I also noted that they did 2 sets of tests.

1- straight oil
2- oil w zmax in it.

Note: The ZMax is a modified thin oil, as best as I remember. some proprietary process is used to turn some sort of base stock onto ZMax.

I wonder why they did not also test a 3rd combo? Oil with the unmodified base stock added.

They put a lot of stock in the penetration of ZMax. Might that penetration advantage be better quantified by comparing it to oil with the base sock added vice just to oil?

Then we would know the true"r" advantage of the ZMax process.

In short, I see nothing convincing in the data.
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