Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Hey Guys -- Well, my son put 10w30 oil in his car for an oil change because that is what the Haynes Guide advised. I just happened to notice that the oil cap on the valve cover says 5W20. Will he have to drain out this 10W30 now or can he just run with it till the next oil change and put in the correct 5W20 at that time? ~ Pop