Buick 2013 Encore Owner's Manual page 315

Maintenance Schedule
Additional Required
Services - Severe
Rotate tires and perform Required Services.
Check engine oil level and oil life percentage.
Change engine oil and filter, if needed.
Replace passenger compartment air filter. (1)
Inspect evaporative control system. (2)
Replace engine air cleaner filter. (3)
Change automatic transmission fluid. Change
filter if serviceable.
Replace spark plugs. Inspect spark plug wires.
Drain, flush, and fill engine cooling system. (4)
Visually inspect accessory drive belts. (5)
Replace brake fluid. (6)
Footnotes Maintenance
Schedule Additional Required
Services - Severe
(1) Or every two years, whichever
comes first. More frequent
replacement may be needed if the
vehicle is driven in areas with heavy
traffic, areas with poor air quality,
or areas with high dust levels.
Replacement may also be needed if
there is a reduction in air flow,
excessive window fogging, or odors.
Service and Maintenance
(2) Check all fuel and vapor lines
and hoses for proper hook-up,
routing, and condition. Check that
the purge valve works properly,
if the vehicle has one. Replace as
needed.
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