To be honest 0w20 /0w30 5w20 by my friends in Toyota and nissan and have got no affect of engine noise or wear. Basically these multi grade oils don't kill ur engine, this is just a misconception by people since they fear of engine. That it will fail this and that. I dont fear about engines since i know this basic principle of quick oil delivery.
It does not means that you're running on 0w30 and 5w30 and raste mein sahara desert ajaye to ap foran bolein chalo yar nikal do oil and 20w50 dal leta hun yahan garmi ziada hai