Hey guys, Long time lurker on here, but I wanted to post this question because I couldn't find any info for a Subie STi, unless I totally f'd-up the search! Please steer me to any posts I've missed regarding my car, but if not - here's my info and question; Background: I've got a 2010 Subaru Impreza STi and I've owned it since new. I've been running Motul 8100 Xcess (the newer, SM rated stuff, as I have a bottle in my garage that is SL-rated strangely enough) since I drained the factory dino fill at 3750 miles. I babied it during that break-in period and afterwards installed Cobb's Stage 1/91 octane off-the-shelf map (no bolt-on mods) and it's been running like a Swiss watch with ZERO oil consumption. My OCI's are between 3K and 3750 miles, only because I know how important frequent OCI's are with turbo cars and my dealer offers the Motul with filter and complete "Service A" for $150 CAD. OEM Subaru blue filter used always. Question: Should I be using Motul's X-Lite due to the ester-based nature of the oil over the PAO 8100 Xcess? Or... is there another oil that someone with an '08+ STi has used with great results? I'm watching the issue of cracked ring-lands on the '08+ STi's with great attention and would like to use the best possible oil for both, my turbo application, as well as this cracked ring-land issue. Sorry if this has been flogged to death, but I honestly couldn't find anything STi related on this forum. Thanks guys!