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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > 20,000 Miles before an oil change?



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      11-30-2005, 08:07 PM   #23
Compos Mentis
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AZMike:
Wow.

I read that the oil condition sensor is called a OZS. Does this stand for "Oil Impedance Sensor"? (Impedance being the inverse of resistance)

Just a WAG, but it could measure the resistance of the oil. More metal gives a lower resistance reading. Could be a cheap way of sensing the oil condition.

Admitted, this is just a wild guess.

CM
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