If your car has a PCV valve, and if your engine has been idling roughly or a malfunction indicator light goes on, check the valve. Car manufacturers suggest that PCV valves be cleaned or replaced ...
I am looking at a 2015 Hyundai Elantra that has only done 55,000km and I’m thinking of purchasing it. But when the car has run, even for a little bit, when I take the oil cap off there is white steam ...