Operation CHARM: Car repair manuals for everyone.

Maintenance Interval

Every 15,000 Miles:
- Inspect hoses and lines.
- Inspect brake shoes and drums.
- Inspect parking brake cables.
- Change brake system fluid annually except 300SL, 500SL. Preferably in Spring.
- 300SL and 500SL models, change brake system fluid every 24 mo. Preferably in Spring.