Wow, the high dollar lower unit earl is about $10/quart. XPF/XR that is what the E-tecs run. It is good last 300 hours.
I would have the mechanic set your EMM to the latest updates. Once completed it should be set to TCW-3 you can then run XD-100 which is a full synthetic or XD-50 which is a blend. Both are the best for your motor.