Hey guys I just bought a new Silverado with the 5.3 non flex fuel last week. The truck has 300 miles on it. I am looking to change all of the fluids to synthetic. I was thinking either all redline or lubramoly. Suggestions? My drive is 3 miles each way to work in stop and go. My days off I fish an hour away and drive balls to the walls to get there...suggestions would be great.