The moisture is very light. There is no evidence of oil. It evaporates almost immediately.

I will try your suggestion to check for moisture on the mats. It may just be moisture on the mats. Living in Vancouver with all its rain, and my short trips, I may have tracked in a bit of moisture.

Its funny that I have never noticed it on any of my previous vehicles.

I will keep an eye on it. Thanks guys, for your input.

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Stan

1991 300E
1980 BMW 528i