Hey guys, this is my first thread, so bear with me. I have a 2012 cls 63 with the m157, a month or so ago I had some chain rattle and had it checked out, apparently one tensioner wasn't holding oil pressure and they fixed it. But now its been a few days where I turn the car on in the morning with no rattle, then go to the gym and when I turn it back on, I hear the loud rattle but only for a second or so. I was wondering if I should worry because of the chain being stretched and if I should just replace it or maybe fill with a bit more oil or let it warm up more in the morning. I'd appreciate some opinions on the issue.
