OK my 18 year old daughter took her 2011 Rio (very last of old style body) to Wal-mart for an oil change. She got about 4 blocks away when the car didn't feel right and it started smoking severely. She pulled over and called me and Wal-Mart. I arrived first and found they had massively overfilled oil. Looks like they filled it twice. The sent out two people who dumped and refilled the oil on the spot and we drove car back to Wal-mart. It smoked and was spitting oil from exhaust. The did and addition oil change filled it properly and we filed a incident report with the manager. Driving home the smoke finally cleared over 10 miles. As of now car seems fine, do we assume its fine. Drive it to Kia dealer and have them check it out or? Can they even tell if engine damaged internally? Like I say it drives fine no warning lights but it was pumping oil into exhaust. Could this have damaged engine, frothy oil causing lubrication issue. Blown seal issues, what about oil in the catalytic converter? Any one else have this issue with Wally world? PS for what it is worth we had a 2010 Soul have an engine replaced for a knocking under warranty. Never going back to a Wal-mart at this point.