Chevrolet 2004 Corvette Specifications download pdf (Page 258)

Your vehicle’s engine is ﬁlled at the factory with a

Mobil 1

synthetic oil, which meets all requirements

for your vehicle.

Substitute Engine Oil: When adding oil to maintain

engine oil level, oil meeting GM Standard GM4718M

may not be available. You can add substitute oil

designated SAE 5W-30 with the starburst symbol at all

temperatures. If temperatures are above 0°F (-18°C),

you may substitute SAE 10W-30 with the starburst

symbol. Substitute oil not meeting GM Standard

GM4718M should not be used for an oil change.

Engine Oil Additives

Do not add anything to your oil. The recommended oils

with the starburst symbol that meet GM Standard

GM4718M are all you will need for good performance

and engine protection.

When to Change Engine Oil

(GM Oil Life System)

Your vehicle has a computer that lets you know when to

change your engine oil and ﬁlter. This is based on

engine revolutions and engine temperature, and not on

mileage. Based on driving conditions, the mileage at

which an oil change will be indicated can vary

considerably. For the oil life system to work properly,

you must reset the system every time the oil is changed.

When the system has calculated that oil life has been

diminished, it will indicate that an oil change is necessary.

A CHANGE OIL SOON message will come on. Change

your oil as soon as possible within the next two times you

stop for fuel. It is possible that, if you are driving under the

best conditions, the oil life system may not indicate that

an oil change is necessary for over a year. However, your

engine oil and ﬁlter must be changed at least once a year

and at this time the system must be reset. Your dealer

has GM-trained service people who will perform this work

using genuine GM parts and reset the system. It is also

important to check your oil regularly and keep it at the

proper level.

If the system is ever reset accidentally, you must

change your oil at 3,000 miles (5 000 km) since your

last oil change. Remember to reset the oil life system

whenever the oil is changed.

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Chevrolet 2004 Corvette Specifications Page 258

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