2012 CHEVROLET CORVETTE oil viscosity

Black plate (16,1)Chevrolet Corvette Owner Manual - 2012
5-16 Instruments and Controls
Oil pressure may exceed 689 kPa
(100 psi) when first started or when
accelerating. It may vary with
engine speed, outside temperature
and oil viscosity, but readings above
the shaded area show the normal
operating range. Readings in the
shaded area tell you that the engine
is low on oil, or that you might have
some other oil problem. SeeEngine
Oil on page 10‑16.
The engine oil pressure can also be
displayed using the GAGES button
on the Driver Information
Center (DIC). See Driver Information
Center (DIC) on page 5‑28.Engine Coolant
Temperature Gauge
Metric
English
This gauge shows the engine
coolant temperature. If the gauge
pointer moves into the shaded area,
the engine is too hot.
This means that the engine coolant
has overheated. If the vehicle has
been operating under normal driving
conditions, pull off the road, stop the
vehicle and turn off the engine as
soon as possible.
See Engine Overheating on
page 10‑34 for more information.

Black plate (16,1)Chevrolet Corvette Owner Manual - 2012
10-16 Vehicle Care
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:
.Always 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 on page 10‑22.
.Always dispose of engine oil
properly. See “What to Do with
Used Oil” in this section.
Checking Engine Oil
(Except Z06, ZR1, and
Grand Sport)
If the CHECK OIL LEVEL message
displays on the Driver Information
Center (DIC), check the engine oil
level right away. For more
information, see Engine Oil
Messages on page 5‑41. Check the
engine oil level regularly; this is an
added reminder.
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 on
page 10‑10 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 the dipstick and clean it with a paper towel or cloth, then push
it back in all the way. Remove it
again, keeping the tip down, and
check the level.

Black plate (21,1)Chevrolet Corvette Owner Manual - 2012
Vehicle Care 10-21
8. Start the engine and let it run atidle for at least 15 seconds. This
will circulate the fresh engine oil
through the lubrication system.
9. Shut off the engine and check the oil level as described under
“Checking Engine Oil (Z06, ZR1,
and Grand Sport).”
Selecting the Right Engine Oil
Selecting the right engine oil
depends on both the proper oil
specification and viscosity grade.
See Recommended Fluids and
Lubricants on page 11‑12.
Specification
Use and ask for licensed engine
oils with the dexos1™ approved
certification mark. Engine oils
meeting the requirements for the
vehicle should have the dexos1
approved certification mark. This
certification mark indicates that the
oil has been approved to the dexos1
specification. Corvette recommends Mobil 1
®engine oils that meet
the requirements of the dexos1
specification for its dry‐sump
equipped engines.
Notice: Failure to use the
recommended engine oil or
equivalent can result in engine
damage not covered by the
vehicle warranty. Check with your
dealer or service provider on
whether the oil is approved to the
dexos1 specification.
Viscosity Grade
SAE 5W‐30 is the best viscosity
grade for the vehicle. Do not use
other viscosity grade oils such as
SAE 10W‐30, 10W‐40, or 20W‐50. If in an area of extreme cold,
where the temperature falls below
−20°F (−29°C), an SAE 0W‐30 oil
should be used. An oil of this
viscosity grade will provide easier
cold starting for the engine at
extremely low temperatures.
When selecting an oil of the
appropriate viscosity grade,
always select an oil that meets the
dexos1 specification or equivalent.
See
“Specification” for more
information.
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil.
The recommended oils with the
dexos specification and displaying
the dexos certification mark are all
that is needed for good performance
and engine protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by the
vehicle warranty.

Black plate (12,1)Chevrolet Corvette Owner Manual - 2012
11-12 Service and Maintenance
Recommended Fluids, Lubricants, and Parts
Recommended Fluids and Lubricants
Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer.Usage Fluid/Lubricant
Engine Oil Use only engine oil licensed to the dexos1 specfication, or equivalent, of
the proper SAE viscosity grade. ACDelco dexos1 Synthetic Blend is
recommended. See
Engine Oil on page 10‑16.
Engine Coolant 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See
Engine Coolant on page 10‑30.
ZR1 Only: Intercooler System 50/50 mixture of clean, drinkable water and use only DEX-COOL Coolant.
See
Engine Coolant on page 10‑30.
Hydraulic Brake System DOT 3 Hydraulic Brake Fluid (GM Part No. 88862806,
in Canada 88862807).
Windshield Washer Optikleen
®Washer Solvent.
Hydraulic Clutch System Hydraulic Clutch Fluid. Use only GM Part No. 88958860,
in Canada 88901244, Super DOT-4 brake fluid.
Power Steering System GM Power Steering Fluid (GM Part No. 89021184, in Canada 89021186). Chassis Lubrication
(Rear Toe‐Link Outer Ends with Z06, ZR1, or Z51 Option) Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or
lubricant meeting requirements of NLGI #2, Category LB or GC-LB.