My 2006 Mazda 3 (2.3L) engine by accident and didn't realize it. I fixed the issue I think. What should I do now? I only drove about 2 miles before I noticed plums of white smoke coming from my exhaust. I turned around and drove it back. I drained all the oil and replaced it with the correct amount.
It seems to run fine. But it idles just barely more rough than before. And very thin and small amounts of white smoke still come out of the exhaust when idling. Is this just residual from before or should I no longer drive my car?