Engine Oil - GMC duramax diesel 2016 Supplement Manual

92 Vehicle Care
1. Battery
2. Coolant Surge Tank and
Pressure Cap
3. Automatic Transmission
Dipstick
4. Engine Oil Dipstick
5. Engine Fan (Out of View)
6. Engine Oil Fill Cap
7. Engine Air Cleaner/Filter
8. Air Cleaner/Filter Restriction
Indicator
9. Power Steering Fluid Reservoir
10. Brake Fluid Reservoir
11. Windshield Washer Fluid
Reservoir

Engine Oil

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 in the owner
manual.
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 oil
must be warm, at normal operating
temperature, and the vehicle must
be on level ground. The engine oil
dipstick handle is a loop. See
Engine Compartment Overview 0 87
for the location of the engine oil
dipstick.
Obtaining an accurate oil level
reading is essential:
1. Turn off the engine and allow at
least five minutes for the oil to
drain back into the oil pan. With
a cool engine, allow
30 minutes. Checking the oil
level too soon after engine
shutoff will not provide an
accurate oil level reading.
Warning
The engine oil dipstick handle
may be hot; it could burn you.
Use a towel or glove to touch the
dipstick handle.
2. Pull out the dipstick and wipe it
with a clean paper towel or a
cloth, then push it back in all
the way. Remove it again,
keeping the tip down.