Changing oil will not make any noticeable difference in performance, unless you overfilled it enough to cause the crankshaft to be whipping the oil. 5w-30 will help on cold starts but will not otherwise give better performance.
Clifton
If you live where it's cold already you might want 5-30w?
LOL, the location coordinates in my profile avatar deal = Houston,TX. I never run 5-30 here. It doesn't get cold enough ever. Had your location said Houston I wouldna even brought that up.i didn't know about that! when it gets cold down here in houston tx....ill change to 5-30.....i learned something new today.......tanks for the info but it still kinda hot on this side..