Buick 1995 Roadmaster Owner's Manual Page 227

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As
shown in the chart,
SAE
5W-30
is best for your
vehicle. However, you can use
SAE
1OW-30
if it’s going
to be
0”
F
(-
18
O
C) or above. These numbers on an oil
container show its viscosity, or thickness.
Do
not use
other viscosity oils, such as
SAE
20W-50.
NOTIC&:
Use only engine
oil
with the American Petroleum
Institute Certified For Gasoline Engines
“Starburst” symbol. Failure to use the proper oil
can result in engine damage not covered by your
warranty.
GM Goodwrench’
oil
(in Canada, GM Engine Oil)
meets all the requirements for your vehicle.
Engine
Oil
Additives
Don’t add anything to your oil. Your Buick dealer
is
ready to advise
if
you
think something should be added.
When
to
Change Engine Oil
See if any one of these
is
true for you:
0
0
0
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 (spch 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.
1.
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 comes first.
If none of them is true, change the oil and filter every
7,500
miles
(12
500
km)
or
12
months
--
whichever
comes first.
See “Change Oil Indicator” in the Index for more
information on when to change the oil.
;“
6-11
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