Chevrolet 1998 Tracker Owner's Manual page 251

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
S A E 5W-30. These numbers on an oil container show
its viscosity, or thickness. Do not use other viscosity
oils, such as SAE 20W-50.
I
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
S A E 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 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.
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