buddy of mine just bought a 2012 f-150 ecoboost with 16k miles. changed the oil today with Pennzoil Ultra 5W30 and a MC FL500S filter. Due to fuel dilution, i suggested he keep his ocis between 3.5-4k, is the Pennzoil Ultra good for the ecoboost or is there an oil that has a better resistance to fuel dilution and viscosity breakdown?