Hope I can get some advice. I have a 95 Cab with 17,300 mi- driven ocassionally in Florida. First, battery died several months ago after sitting for 6 weeks of nonuse (had last been replaced 12/2000 ). Battery was recharged then and I now have trickle charger when car not in use. Since then, however, car turns over very slowly when starting. Tested okay, but is it time for a new battery? Any advise on where to purchase and any specific brands other than oem ? Secondly, the past couple of times I have used the car, I notice a vibration/rattle when in in drive/reverse and car not moving. Seems more prominate on passenger side and can only hear inside car or through wheel well . Only present when car at standstill and in gear ( under load.). Had the oil changed this past week at independent Mercedes shop who tested battery and suggested my engine mounts may be going bad . Seemed odd at 17,300 mi. Thanks for any feedback.