We have the same car as tolian21 and see the same test results. We have another car for around town so the RDX see's mostly highway miles. I don't believe extended highway trips make much if any difference in burning the fuel off. This sample was taken right after 2 back to back 200 mile trips with temps in the mid 70's and the maintenance minder at 30%.
We use 87 octane in our car so I don't think that makes much difference with fuel dilution compared to premium either. Changing the oil at 50% oil life seems like a good way to go and that's what I went with at our last change.
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