Remove the flame protection
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Remove the flame protection by turning the outer casing approx. 15 mm to the left (bayonet mounting).
Blow clean the hoses down against the crankcase ventilation.
Change engine oil, volume 5.80 liters (including oil filter).
CAUTION:
Do not disconnect the hoses from the flame protection's outer casing. The location of the hoses may affect the throttle control's function.