[nascarnation]

She's mildly confused but in the ballpark. The "low oil" sensor looks for oil level and it's in the oil pan.

The "oil condition" is determined by an algorithm running in the powertrain controller that considers a bunch of operating factors and calculates remaining oil life.

[Wuli]

Thanks for the clarification on the method employed by the oil sensor.

Either way, I was mildly surprised it was a feature that Saturn included. It was something I expected of many cars with much better reputations than Saturn, but not Saturn.