I was changing the oil on a friends 91 300D and when I pulled the filter out the round metal top part (about 3-4in in length) was sucked in to more of an octagon instead of a cylinder. Now this makes me a little nervous. We use Mobil 1 Synth and it had only been about 8k mi since last change. The owner claims it's a little sluggish, but at nearly 200k mi I'm sure it doesn't have the pep it had in it's youth. Also there is a slight tick in the front end at low idle that disappears when you rev the car. Any help would be great as I am totally vexed and would just like to know what this means for future referance. Thanks as always!
-Mattias-
-Mattias-