Went to Wal-mart over the weekend. Mercury don't make oil but uses Quicksilver blend and does not recommend DFI 2-cycle blend for the Pro XS motors so I bought 3 gallons of the Quicksilver Synthetic blend. . Thanks man! I didn't even know wal-mart carry most marine needs.
QuickSilver is made by Merc. They offer Premium Plus, Synthetic blend and etc. Premium Plus if memory serves me right can be ran in DFI motors.
and yes, no wake still in effect on the entire stretch of the river. Any time water is above 683ft its no wake. Good Luck out there!