2007 CHEVROLET CORVETTE oil viscosity

Engine Oil Pressure GageThe engine oil pressure gage shows the engine
oil pressure in psi (pounds per square inch) or
kPa (kilopascals) when the engine is running.
Oil pressure should be 20 to 80 psi
(140 to 550 kPa). In certain situations such as
long, extended idles on hot days, it could read
as low as 6 psi (40 kPa) and still be considered
normal. 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 333.
The engine oil pressure can also be displayed
using the GAGES button on the Driver Information
Center (DIC). SeeDriver Information Center (DIC)
on page 207.
United StatesCanada
United States — Z06
ModelCanada — Z06 Model
204

What Kind of Engine Oil to Use
Look for three things:
GM4718M
Your vehicle’s engine requires a special oil
meeting GM Standard GM4718M. Oils meeting
this standard may be identied as synthetic.
However, not all synthetic oils will meet
this GM standard. Look for and use only an
oil that meets GM Standard GM4718M.Notice:If you use oils that do not have the
GM4718M Standard designation, you can cause
engine damage not covered by your warranty.
SAE 5W-30
As shown in the viscosity chart, SAE 5W-30
is best for your vehicle.
These numbers on an oil container show
its viscosity, or thickness. Do not use other
viscosity oils such as SAE 20W-50.
Oils meeting these
requirements
should have the
starburst symbol
on the container.
This symbol indicates
that the oil has
been certied by the
American Petroleum
Institute (API).
Look for this on the oil container, and use only
those oils that are identied as meeting GM
Standard GM4718M and have the starburst
symbol on the front of the oil container.
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Recommended Fluids and
Lubricants
Fluids and lubricants identied below by name,
part number, or specication can be obtained from
your dealer/retailer.
Usage Fluid/Lubricant
Engine OilThe engine requires a special
engine oil meeting GM Standard
GM4718M. Oils meeting this
standard can be identied as
synthetic, and should also be
identied with the American
Petroleum Institute (API) Certied
for Gasoline Engines starburst
symbol. However, not all synthetic
API oils with the starburst symbol
will meet this GM standard. You
should look for and use only an oil
that meets GM Standard GM4718M.
GM Goodwrench
®oil meets all the
requirements for your vehicle. For
the proper viscosity, seeEngine Oil
on page 333.
Usage Fluid/Lubricant
Engine Coolant50/50 mixture of clean, drinkable
water and use only DEX-COOL
®
Coolant. SeeEngine Coolant on
page 347.
Hydraulic Brake
SystemDelco
®Supreme 11 Brake Fluid or
equivalent DOT-3 brake uid.
Windshield
WasherGM Optikleen
®Washer Solvent.
Hydraulic
Clutch SystemHydraulic Clutch Fluid. Use only
GM Part No. U.S. 88958860, in
Canada 88901244, Super DOT-4
brake uid.
Power Steering
SystemGM Power Steering Fluid
(GM Part No. U.S. 89021184, in
Canada 89021186).
Chassis
Lubrication
(Rear Toe-Link
Outer Ends with
ZO6 or Z51
Option)Chassis Lubricant
(GM Part No. U.S. 12377985, in
Canada 88901242) or lubricant
meeting requirements of NLGI #2,
Category LB or GC-LB.
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