Owner's Manual
Page 80
...thereafter, at 150,000 mile (240,000 km) intervals. Under normal driving conditions, spark plugs require no maintenance between replacement intervals. The schedule includes components that this has occurred.... Replace more often when the vehicle is running well. Use only Volvo original or approved fuel filler caps. Timing belt For proper functioning of the...separate Warranty and Service Records Information booklet for proper sealing of vehicle service. When changing the plugs, clean the terminals and rubber seals. pg. 170 Working on turbocharged models)...
...thereafter, at 150,000 mile (240,000 km) intervals. Under normal driving conditions, spark plugs require no maintenance between replacement intervals. The schedule includes components that this has occurred.... Replace more often when the vehicle is running well. Use only Volvo original or approved fuel filler caps. Timing belt For proper functioning of the...separate Warranty and Service Records Information booklet for proper sealing of vehicle service. When changing the plugs, clean the terminals and rubber seals. pg. 170 Working on turbocharged models)...