20 K miles on the twin turbo now and they were loaded with sand and dirt. Did a rear end gear oil change too, that was easy, used Mobil 1 synthetic 75-140, expensive stuff. Hell the dealer got me 60 bucks each for the air filters at the parts dept and then I changed out the cabin filter too, that was 50 bucks. I wanted to use original Benz parts. Nothing like a little maintenance~ The car feels smoother, must just be in my head I guess, lol. 5000 miles on the current oil, will do another in 5K miles and replace the tires then with the Michelins. How often do you guys change your trans oil? I'm thinking about doing that at 50K miles along with the brake fluid then. I'm a maintenance fanatic.

Small change to keep it running right and longevity. Next time try and order the parts ahead of time from an online MB dealer who offers better discounts.