Periodic maintenance helps minimize emissions

Periodic maintenance will help keep your vehicle running well. Your Warranty and Service Records Information booklet provides a comprehensive periodic maintenance schedule up to 150,000 miles (240,000 km) of vehicle maintenance.
The schedule includes components that affect vehicle emissions. This page describes some of the emission-related components.
See also:
Fuel requir
Deposit control gasoline (detergent
additives)
Volvo recommends the use of detergent gasoline
to control engine deposits. Detergent
gasoline is effective in keeping injectors and
intake valves cl ...
Tread wear indicator
The tires have wear indicator strips running
across or parallel to the tread. The letters TWI
are printed on the side of the tire. When
approximately 1/16" (1.6 mm) is left on the
tread ...
Comfort
Comfort mode offers a somewhat softer ride
and the transmission shifts gears at lower rpm.
This mode is particularly suitable for long-distance
highway driving. The indicator light in the
butto ...
