A really cautious person would consider a new chain and some or all of the guide rails at 100K miles. That's a couple of hundred for a new chain or a couple of thousand for all new guide rails. A reasonable person would wait for 150K miles.

Depending on when last done, consider:

- transmission fluid and filter change
- power steering fluid and filter change
- brake fluid change
- does your car have cabin air filters?

I'm sure others will chime in.

Sixto
95 S420
87 300SDL