Anyone Know What This Maintenance Reminder Is For?

[ard]

We are in general agreement...

My point is that there is a bunch of hand waving going on with many of these lay press pieces, as well as 'trust us, we are omnipotent' from the mfg... and my specific point with quoting JCL was that none of the sensors measre "depletion of the additive package".

Note that I am not saying the capacitance they measure and the ways in which they filter and reduce these measurements are useless, nor am I saying they do not correlate with oil life. They most likely do. We just do know know the correlations or errors or foibles.

We have water, soot and fuel contamination...as well as changes in viscosity...and changing wear metals... does the sensor measure one of these? some of these? or is it simply a correlation wherein multiple aspects combine in non-linear ways, but by testing a correlation has been developed to allow that to say "this oil is probably bad"?

From continental:

The QLT sensor was launched in 1996 to monitor engine oil quality, level and temperature. Two sensors simultaneously and continuously monitor diesel engine oils containing soot. The instrument also monitors nitric oxide and oxidation products in spark-ignited engines, as well as water and fuel contamination. Because these factors influence the oil’s electrical properties and permittivity (ability of a material to resist the formation of an electric field within it), an effective oil condition sensor is achieved, according to the manufacturer. The QLT also has an integrated precision probe that allows it to measure critical temperatures and exact oil levels. It can track temperatures ranging from -40°C to 160°C. The oil level, up to 100 milliliters, is calculated by a second capacitor.

I suppose that somewhere, behind a large NDA, you can find UOAs with correlated long term sensor readings- curves, frequency spectra, etc, etc...


But we dont have it here.


We meet up, Im buying beers for both of you.