My grandmother recently purchased a demo model '13 Ford Fusion with the 1.6 litre Ecoboost four. We've done two oil changes on it, the first with Napa Syn 5W-20, and the recent one with Motorcraft Syn Blend 5W-20. When I drained the Napa at about 8k, it looked rough. I'm not saying that it was bad oil, I'm just reporting the appearance. We're going to run the Motorcraft to 7.5-8K. This engine is DI and turbocharged. My question is, "Is there something out there that will hold up better to the DI/turbo combination?" The manual states that the oil only needs to meet the current Ford standard, which most oils do, con., syn blend, or full syn. I've also heard of lessening the OCI with DI engines.