Here is a more comprehensive maintenance schedule for the cam belt on a Peugeot 306 XSi:
Every 30,000 miles (50,000 km) or 2 years:
* Check the cam belt tension and condition
* Replace the cam belt if necessary
Every 60,000 miles (100,000 km) or 4 years:
* Replace the cam belt
* Replace the water pump
* Replace the cam belt tensioner
* Replace the camshaft oil seal
Note: If your Peugeot 306 XSi is fitted with a diesel engine, the cam belt should be changed every 37,000 miles (60,000 km) or every 3 years, whichever comes first.
It is important to follow these recommended maintenance intervals to avoid costly engine damage. If you have any questions or concerns about changing the cam belt on your Peugeot 306 XSi, please consult with your trusted mechanic.