This is my Backstone labs report.
2006 Legacy GT sedan. I don't abuse it, but I like the acceleration and tend to wind it out a bit sometimes....
I ran the oil over the summer.
Ran 5k miles between May and early December (I live near Washington DC)
I work 3 miles from work (one way) Takes 10 minutes and there are 7-10 stops, which explains the fuel dilution.
I run Shell Rotella T6 and the Blue Subaru filter for the last 4 oil changes (about 20k miles). Though this past change I switched to the 2009 RX8 Black Tokio Roki (however you spell it) filter. For those that aren't familiar, it has the same specs as the Subaru (including bypass pressure), but is physically larger about at least 35% and I'm told is better quality.
The car had 64k miles the day I took the sample and I drove it 5k miles and didn't add any oil, though I was about 2/3rd of a quart low when I did the change.