Olm
 

Tadge I Have a 2017 C7 Z51. I previously owned a C6 and C5 In the C5 and C6 it was apparent to me that Mobil 1 oil had a 10,000 mile life and that changing oil at 10K or at one year which ever came first was acceptable. Along comes the OLM in the C7 and a time factor is added that causes my oil life to "deteriorate". Even though my car is sitting in the garage this winter. At the end of 4 months I would have lost 37 % of oil life. In addition the mileage factor is 1% for every 50 miles so the life of Mobil1 is reduced to a maximum of 5000 miles. What gives? See my post dated 1/31/18 titled "Idiotic Oil Life Monitoring System" to read the thread of confusion caused by the new OLM. When it is all boiled down the system has become a timer. The new design was a fix for a non problem that created its own problem.

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