used 10w-30 instead of 5w-30

So i got a quick question, did my oil change the other day and didnt realize until i was done i used 10w instead of 5w. Figured it would be fine so i left it as is simce the engine miles are up there. Car runs fine but now when i get up to speed i hear this very faint hum. Sounds like (what i thought at the time i first heard it) a small moped scooter off at the distance. I dont recall this sound being there before but then again i also wasnt looking for it. So i cant tell if this is just the sound of the car running better or if i maybe just used to thick a oil. Is this normal or should i just drain it and put the proper 5w in it? Its a 2007 chevy cobalt ls with 177k miles on it located in florida. Thanks

Friend, these ecotec engines only use 5w-30 for the entire life. I suggest you change it to the right one. If it is synthetic better.