Are there any known issues for the Promaster? Things that are known to go bad and cause major problems? An example with a different vehicle would be the 2007-2009 Mini Cooper S cars. They have a serious issue with timing chain tensioners going bad and destroying the engine. Does the Promaster have any issues like that? If I'm going to spend 30K plus on a commercial van I'd like to do it with as much information as possible. Thanks in advance.