262 Vehicle Care
1. Coolant Surge Tank and
Pressure Cap. See Engine
Coolant 0 269
ii .
2. Engine Air Cleaner/Filter
0 266
ii .
3. Engine Cooling Fan (Out of
View). See Cooling System
0 268
ii .
4. Engine Oil Fill Cap. See
Engine Oil 0 262
ii .
5. Engine Oil Dipstick. See
Engine Oil 0 262
ii .
6. Engine Compartment Fuse
Block 0 285
ii .
7. Brake Fluid Reservoir. See
Brake Fluid 0 275
ii .
8. Windshield Washer Fluid
Reservoir. See Washer Fluid
0 273
ii .
9. Battery - North America 0 276
ii .
Engine Oil
For diesel engine vehicles, see
“Engine Oil” in the Duramax diesel
supplement.
To ensure proper engine
performance and long life, careful
attention must be paid to engine oil.
Following these simple, but
important steps will help protect
your investment:
.
Use engine oil approved to the
proper specification and of the
proper viscosity grade. See
“Selecting the Right Engine Oil”
in this section.
.
Check the engine oil level
regularly and maintain the
proper oil level. See “Checking
Engine Oil” and “When to Add
Engine Oil” in this section.
.
Change the engine oil at the
appropriate time. See Engine Oil
Life System 0 264
ii .
.
Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
It is a good idea to check the engine
oil level at each fuel fill. In order to
get an accurate reading, the vehicle
must be on level ground. The
engine oil dipstick handle is a yellow
loop. See Engine Compartment
Overview 0 259
ii for the location of
the engine oil dipstick.
Obtaining an accurate oil level
reading is essential:
1. If the engine has been running
recently, turn off the engine and
allow several minutes for the oil
to drain back into the oil pan.
Checking the oil level too soon
after engine shutoff will not
provide an accurate oil level
reading.
2. Pull out the dipstick and wipe it
with a clean paper towel or
cloth, then push it back in all
the way. Remove it again,
keeping the tip down, and
check the level.
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