I see the engine mounts from under the hood. I also noticed what looks like a mini-shock absorber. Is that part of the engine mount? Is it important? How can you tell if it is working? The engine vibrates while in idle but it has no effect on that mini-strut. The rubber mounts are soaked in engine oil but they are not torn. I'm not sure how old they are since I just got the car 1 month or two ago. Mercedes Source has a neat engine mount kit that I can buy but I was wondering if aside form the two rubber engine mounts and the transmission mount, if the mini-strut should be replaced? Also, when replacing these mounts; would this be a good opportunity to replace other things on the engine that are normally hard to reach, and which are typically worn out and time to replace?