As
shown in the chart,
SAE
1OW-30 is best for your
vehicle. However, you can use
SAE
5W-30 if it’s going
to be colder than
60°F
(
16°C)
before your next oil
change. When it’s very cold, you should use
SAE
5W-30. These numbers on an oil container show
its viscosity, or thickness.
Do
not use other viscosity
oils, such as
SAE
20W-50.
NOTICE:
Use only engine oil with the American Petroleum
Institute Certified For Gasoline Engines
“Starburst’’ symbol. Failure to use the
recommended oil can result in engine damage not
covered
by
your warranty.
GM Goodwrench’ oil meets all the requirements for
your vehicle.
If you are
in
an area where the temperature falls below
-20°F
(-29”C),
consider using either an
SAE
5W-30
synthetic oil or an
SAE
OW-30 oil. Both will provide
easier cold starting and better protection for your engine
at extremely low temperatures.
Engine Oil Additives
Don’t add anything
to
your oil. Your Geo dealer is ready
to advise if you think something
should
be
added.
When to Change Engine
Oil
If any one of these
is
true for you, use the short tripkity
maintenance schedule:
0
0
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 (such as frequent
driving
in
stop-and-go traffic).
You operate your vehicle in dusty areas or
off-road frequently.
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.
If
none
of them
is
true, use
the
long triphighway
maintenance schedule. Change oil and filter every
7,500
miles
(12
500
km)
or
7.5
months
--
whichever
occurs first. Driving a vehicle with a
fully
warmed
engine under highway conditions causes engine oil to
break down slower.
6-13
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