Fuel; Fuel Additives; Filling The Tank - Chevrolet Corvette Owner's Manual

204 Driving and Operating

Fuel

Use the recommended fuel for
proper vehicle maintenance.
For the LT1 6.2L V8 engine, use
unleaded petrol with a posted
octane rating of 95 RON or higher.
Unleaded petrol rated at 91 RON
can be used, but acceleration and
fuel economy will be reduced, and
an audible knocking noise may be
heard. If this occurs, use petrol
rated at 95 RON as soon as
possible, otherwise the engine could
be damaged. If heavy knocking is
heard when using unleaded petrol
rated at 95 RON, the engine needs
service.
For the LT4 6.2L V8 supercharged
engine, use unleaded petrol with a
posted octane rating of 95 RON or
higher. If the octane is less than 95
RON, the engine could be damaged
and repairs would not be covered by
the vehicle warranty. If heavy
knocking is heard when using petrol
rated at 95 RON octane, the engine
needs service.
Caution
Do not use fuels with any of the
following conditions; doing so
may damage the vehicle and void
its warranty:
Fuel with any amount of
methanol, methylal, and
aniline. These fuels can
corrode metal fuel system
parts or damage plastic and
rubber parts.
Fuel containing metals such
as methylcyclopentadienyl
manganese tricarbonyl
(MMT), which can damage
the emissions control
system and spark plugs.
Fuel with a posted octane
rating of less than the
recommended fuel. Using
this fuel will lower fuel
economy and performance,
and may decrease the life of
the emissions catalyst.

Fuel Additives

Petrol should contain detergent
additives that help prevent engine
and fuel system deposits from
forming. Clean fuel injectors and
intake valves will allow the emission
control system to work properly.
Some petrol does not contain
sufficient quantities of additives to
keep fuel injectors and intake valves
clean. To make up for this lack of
detergency, consult your retailer for
the GM approved additive
treatment. Add this additive to the
fuel tank at every engine oil change
or every 15,000 km (9,000 mi),
whichever occurs first.

Filling the Tank

Warning
Fuel vapours and fuel fires burn
violently and can cause injury or
death.
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