Buick Buick Century Automobile User Manual


 
When
to
Chang(
Cngine
Oil
If any one of these
is
true for you,
use
the
short
tripkity
maintenance schedule:
Most trips are less than
5
to 10 miles
(8
to
16
km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such as frequent
driving in stop-and-go traffic).
Most trips are through dusty areas.
You
frequently tow
a
trailer or use a carrier
on
top of
your vehicle.
The vehicle is used for delivery service, police, taxi
or other commercial application.
Driving under these conditions causes engine
oil
to break
down sooner.
If
any
one
of these is
true
for your vehicle,
then you need to change your oil and filter every
3,000
miles
(5
000
km)
or
3
months
--
whichever occurs
first. (See “Change Oil Soon” Light in the Index.)
If none
of
them is true, use the long triphighway
maintenance schedule. Change the oil and filter every
7,500
miles
(12
500
km)
or
12
months
--
whichever
occurs first. Driving a vehicle with a fully warmed
engine under highway conditions causes engine oil to
break down slower.
(See “Change Oil
Soon”
Light in the Index.)
What to
Do
with
Used
Oil
Did you know that used engine oil contains certain
elements that may be unhealthy for your skin and could
even cause cancer? Don’t let used oil stay on your skin
for very long. Clean your skin and nails with soap and
water, or a good hand cleaner. Wash or properly throw
away clothing or rags containing used engine oil. (See
the manufacturer’s warnings about the use and disposal
of
oil
products.)
Used oil can be a real threat to the environment. If you
change your own oil, be sure to drain all free-flowing oil
from the filter before disposal. Don’t ever dispose of oil
by putting it in the trash, pouring it on the ground, into
sewers, or into streams or bodies
of
water. Instead,
recycle it by taking it to a place that collects used oil.
If
you have a problem properly disposing
of
your used oil,
ask your dealer, a service station or a local recycling
center for help.