Castrol Syntec 10W30, Fram XG43 filter.
351W, hydraulic roller cam, TFS heads. HP? I don't know.
Been using Castrol
synthetic for several years in all newer engines including this one. Engines run cooler, cleaner, and little wear.
Oil pressure stays planted at 50 lb. 25 lb hot and idling. Nonsense about
synthetic being more leak prone. Target and Wall Mart sell it in gallon containers for a little over $13, as opposed to $5/ quart. Got a 9 quart pan to feed at change time.
Filter is an extended life Fram. The #43 I found in a cross reference. W motor in CR won't take a full length filter. The #16 is used in 302 powered MII's. The #43 is in between full length and shortie 16.