clydesdale: Did you run a UOA at the end of that 10K miles? You can make that choice by yourself...
Pick your 5W-40...
1. Do a 5K mile UOA-->review the results...continue until your 10K... Do another UOA-->review the results...
Then do the same with the Valvoline.. I'll bet the valvoline will have a slight edge... but review both results and choose...