3.2L Engine:
- Normal conditions: Every 7500 miles or every 1 year, whichever comes first.
- Severe conditions: Every 3750 miles or every 6 months.
4.4L Engine:
- Normal conditions: Every 10000 miles or every 12 months, whichever occurs first.
- Severe conditions: Every 5000 miles or every 8 months, whichever occurs first.
Volvo also recommends synthetic motor oil 5W-30 for the best performance.