Originally Posted By: oil_film_movies
I've seen that paper cited a number of times on this forum.
Its informative, as there is a summary of Ford's, Chrysler, and GM algorithms, a lot of engineering knowledge on the subject of how to do this right.
Agree its of interest, but the English is a bit broken in various places, which makes it a bit long-winded, and can affect the meaning. For example:
"3. It is not clear how the sensor differentiates between the changes in viscosity caused by
temperature change, oxidation, fuel dilution, and mechanical wear, all of which may lead
to oil deterioration but may not be detected by change in viscosity. "
seems to be a circular self-contradiction.