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You should look for this on the oil container, and use
only those oils that are identified as meeting GM
Standard 4718M and have the "Starburst" symbol on the
front of the oil container.
Your Corvette engine is filled at the factory with a
Mobil 1
@
synthetic oil, which meets all requirements for
your vehicle.
Substitute Oil (LTl Only): When adding oil to
maintain engine oil level, oil meeting GM Standard
GM47 18M may not be available. You can add substitute
oil designated SAE 5W-30 with the "Starburst" symbol
or API Service SH at all temperatures. If temperatures
are above 0" F
(-
18
O
C), you may substitute SAE
1OW-30 with the "Starburst" symbol or API Service SH
oil. This oil should not be used for an oil change.
Substitute Oil (LT5 Only): When adding oil to
maintain engine oil level, if an oil meeting GM Standard
GM47 18M is not available, you can use oil designated
SAE 1OW-30 with the "Starburst" symbol or API
~
Service SH at all temperatures. This oil should not be
used for an oil change.
Engine Oil Additives
Don't add anything to your oil. Your Chevrolet dealer is
ready to advise if you think something should be added.
When to Change Engine Oil
See if any one of these is true for you:
0
Most trips are less than 5 to 10 miles (8 to 16 km).
This is particularly important when outside
temperatures are below freezing.
Most trips include extensive idling (such as frequent
driving in stop and go traffic).
Most trips are through dusty areas.
If any one of these is true for your vehicle, you need to
change your oil and filter every 3,000 miles
(5 000
km)
or 3 months -- whichever comes first. (See "Engine Oil
Life Monitor" in the Index.)
If none of them is true, change the oil and filter every
7,500 miles (12 500
k m )
or 12 months
--
whichever
comes first. (See "Engine Oil Life Monitor" in the
Index.)
Engine Coolant Heater
An engine coolant heater can be a big help if you have
to park outside in very cold weather, 0" F
(-
1 8
O
C) or
colder. If your vehicle has this feature, see "Engine
Coolant Heater" in the Index.
6-16
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