With 35,600 miles on our 2005 subaru outback xt, the turbo failed. the dealer service technician said this was do to the condition of the engine oil which was 7 months old and had 5,400 miles on it. all 7 of the vehicles oil changes were done within the 7,500 mile interval set forth in owners/vehicle maintenance manual. according to the subaru service bulletin # 02-103-07 (http://store.forcedperformance.net/merchant2/graphics/subaru_oil/02-103-07.pdf -- not sent to owners), there appears to be a design defect with the "banjo bolt" oil supply line to the turbo, which make this engine unable to live up to the specified maintenance intervals in its power train warranty. *tr