I have also taken note (strongly recommended) of TRANSMEISTER, here in Orange County (for future Reference, hopefully the FAR future!).
I now have 125k miles on my 95 C280, and it shifts beautifully! Only issue is the delay when engaging reverse (who cares really!?). The car had normal trans services (one at 30k and then at 60k) by PO, then when I got it at 70k miles, I did a trans service at 80k miles, then at 100k miles, and then again at 117k miles. I have it serviced much less than 30k mile intervals because I give my transmission plenty of hard work! And I only have it serviced at the dealer (mainly due to fluid level accurateness, which "Jiffy Lube" doesn't seem to pay attention to), and it's only $70 parts AND labor.
I drive it hard, but service more than recommended; hopefully it will balance out. Every American car I've dealt with has had new transmissions before 100k (Tahoe @ 80k miles), 1992 Jeep Cherokee @ 80k miles, then at 90k miles. That Jeep is on 130k miles now......... and WHAT A PEICE OF CRAP!! (older brother's car... not much of a 'car person'). 1997 Chevy blazer transmission failed at 70k miles. Also, I have a friend with a 99 Jeep Grand Cherokee with 50k miles on it, and he has some slippage on hard acceleration 2-3 shifts (did trans flush at scheduled 30k). He does sometimes drive it hard, even with maintenance though, that is where I feel Benz (and most imports') accels; You can be rough as all h*ll with the trans, in congruence with meticulous maintenance, it'll last a long time (I've heard that people in Germany have serious LEAD foots, and most of their cars (/transmissions) have held up beautifully.
Anyway, I hope your trans issue worked out nicely. 50k is much too long to ignore Trans service in a $$$$$$ transmission. Even if it doesn't look burnt or brown, the fluid still loses it's lubrication abilities over time.
2006 E350 w/ 155k miles (Daily Driver)
1993 300E 3.2L Sedan w/ close to about 300k miles
2003 E500 Brilliant Silver (Had 217k miles when totalled!)
1989 300E with 289,000 miles (had for <1 yr while in HI)
03 CLK 500 cabrio (Mom's)
2006 C230k (Dad's)
1999 S420 (Mom's/Dad's)
2000 C230k Sport sedans
2001 CLK320 Cabrio (Mom's)
1995 C280 My First Mercedes-Benz... (155k miles. EXCEPTIONAL AUTOMOBILE. Was Very hard to let go of!)
Last edited by David C Klasse; 03-05-2002 at 07:58 AM.