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6-21
Engine Oil Additives
Don’t add anything to your oil. The recommended oils
with the API service symbol are all you will need for
good performance and engine protection.
When to Change Engine Oil
If any one of these is true for you, use the short trip/city
maintenance schedule:
D Most trips are less than 5 miles (8 km).
This is particularly important when outside
temperatures are below freezing.
D Most trips include extensive idling
(such as frequent driving in stop
-
and
-
go traffic).
D You frequently tow a trailer or use a carrier on top
of your vehicle.
Driving under these conditions causes engine oil to
break down sooner. If any 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.
Содержание GMC 2002
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