its all gravy for them, because now they know the car at LEAST had oil changes... voila- instant CPO car when it comes back in from lease. i dont know if engine sludging is still a "thing", but it becomes a non-issue for the lucky second owner, who iis also likely paying top CPO dollar as well as a subprime interest… » 9/09/14 5:20pm 9/09/14 5:20pm