I only ever ran whatever oil I got on sale. Every once in a while I would find synthetic NAPA brand cheaper than regular so it got used sometimes. Since you are going to change it every 3,000 miles anyway per the service intervals, regular oil is fine. Make sure all 16 spark plugs get changed every 30k with basic copper plugs as well. Your truck has the 545RFE 5 speed auto transmission and a full float AAM 10.5 rear end.
2017 28BHBE Kitchen skylight, remote control and Aluminum wheels hitched by ProPride 3P
2012 Jayco Jay Flight 26BH traded in
2013 Toyota Tundra DC 4x4, 5.7, 6 speed 4.30 gears