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Buick Regal Owner Manual - 2011
Service and Maintenance 11-5
First Engine Oil Change After
Every 80 000 km/50,000 Miles
.
Engine air cleaner filter
replacement. See Engine Air
Cleaner/Filter on page 10‑15.
.
Automatic transmission fluid
change (severe service) for
vehicles mainly driven in heavy
city traffic in hot weather, in hilly
or mountainous terrain, or used
for taxi, police, or delivery
service. See Automatic
Transmission Fluid on
page 10‑14.
.
Evaporative control system
inspection. Check all fuel and
vapor lines and hoses for proper
hook‐up, routing, and condition.
Check that the purge valve,
if the vehicle has one, works
properly. Replace as needed. An
Emission Control Service. The
U.S. Environmental Protection
Agency or the California Air
Resources Board has
determined that the failure to
perform this maintenance item
will not nullify the emission
warranty or limit recall liability
prior to the completion of the
vehicle's useful life. We,
however, urge that all
recommended maintenance
services be performed at the
indicated intervals and the
maintenance be recorded.
First Engine Oil Change After
Every 160 000 km/100,000 Miles
.
Automatic transmission fluid
change (normal service). See
Automatic Transmission Fluid on
page 10‑14.
.
Spark plug replacement and
spark plug wires inspection.
An Emission Control Service.
First Engine Oil Change After
Every 240 000 km/150,000 Miles
.
Engine cooling system drain,
flush, and refill (or every
five years, whichever occurs
first). See Cooling System on
page 10‑17. An Emission
Control Service.
.
Engine drive belts inspection
for fraying, excessive cracks,
or obvious damage (or every
10 years, whichever occurs
first). Replace, if needed.