Just an experiance. I did find some foam the last time I checked the oil before my clutch went. Ive heard that rotella will foam, as it dosent have the anti foam that the Mobil diesel oil has. Maybe its becuase of the new cams... Or bigger turbo.. But I think Im gonna switch to Mobil ESP.

11.45@125,
stock bottom end 6bolt 2g head.
272 hks cams.
Holset hx35
Backyard biult!!