This will be my first oil change coming up in 200 miles. The truck is an 05 QC. I looked at the manual and it shows that the truck requires 0W40. Is that a full synthetic? Should I put in a full synthetic? In the past I've always gotten my oil changed at Valvoline because its quick and i don't have to **** with it myself. Should I keep going to Valvoline or try somewhere else? Any suggestions would be much appreciated!