Mobil 1 0W-40, 7423mi, 96 Acura 3.5RL, 167,732mi

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Oil remains in service.

Acura167732.jpg
 
Ca, Mg, doesn't add up. Mg went from 700+ppm, down to 123 and than to 153. Calcium also from 1006, to 3060 and to 2700s ... It made up and down in a strange matter...
I assume this fill was at 160309k miles and kept in service. But Calcium is all over the place and the Mg massive loss is also odd...
 
Originally Posted By: Pontual
Ca, Mg, doesn't add up. Mg went from 700+ppm, down to 123 and than to 153. Calcium also from 1006, to 3060 and to 2700s ... It made up and down in a strange matter...
I assume this fill was at 160309k miles and kept in service. But Calcium is all over the place and the Mg massive loss is also odd...


He didn't mention in the OP that all the UOA's were with M1 0w-40. In fact he didn't mention what the previous fills were at all. The trends show it was changed a number of times.
 
This oil went in service at 160,309.

It will come out around 170,000 assuming I still have the car (or still take care of it, which is a distinct possibility).

This car had one or two runs with 10/30 M1 when I first got it, but at this point all the runs that remain on the sheet prior to the 0/40 are some flavor of M1 5w/30.

They are pretty much all posted here I think
 
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