[glenndeweirdt]

Thanks Aaron,
Both the independent and dealer checked for combustion products in coolant and coolant in oil. Negative.
checked for bubbles in the resevoir when engine at operating temp at 3000rpm for a minute or so-negative. Do I live with this or take it back to the dealer?

What are the symptoms of dreaded RMS leak? I have noticed traces (2-3ml) of oil on the garage floor since the car turned 40k miles a few months ago. I have no detectable oil loss problems.