Recently had my wife's 2012 Nissan Versa Sedan 1.6 SV w/approx 40k miles, oil changed at a local quick lube joint. (I know...I was being lazy) but anyways, upon getting the car home it started smoking A LOT out of the tail pipe, but was running as smooth as it always has. After a few times of doing this after start up it quit smoking. I googled this problem and I think it may have been overfilled. My question is: Is this harmful and has this done damage to the cars engine?
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