When To Change Engine Oil - GMC 2001 Sonoma Owner's Manual

As in the chart shown previously, SAE 5W
your vehicle. However, you can use SAE 10W
going to be 0 _ F ( 18 _ C) or above. These numbers on an
-
oil container show its viscosity, or thickness. Do not use
other viscosity oils, such as SAE 20W
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 R 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 0W
will provide easier cold starting and better protection for
your engine at extremely low temperatures.
6-16
-
30 is best for Engine Oil Additives
-
30 if it's
Don't add anything to your oil. The recommended oils
with the starburst symbol are all you will need for good
performance and engine protection.
-
50.

When to Change Engine Oil

If any one of these is true for you, use the short trip/city
maintenance schedule:
D
D
D
D
D
-
30 oil. Both
D
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).
Your vehicle has a 2200 L4 (Code 5) flexible fuel
engine and you have used E
You operate your vehicle in dusty areas or
-
off road frequently.
You frequently tow a trailer.
The vehicle is used for delivery service, police, taxi
or other commercial application.
-
85 ethanol fuel.