We have a '97 C230 that we purchased new and have given lots of TLC. I'm a
strong believer in preventative maintenance and was surprised when the
dealer service manager recommended against servicing the transmission.
I figured at 145K miles the transmission must be do for new fluid or
filter. The vehicle shifts smoothly when warmed up but getting into 3rd is
a little slow before the first 5-10 minutes of operation.