Corvette C5 2004 Owners Manual PDF | Page 246

CAUTION: (Continued)
Be sure to use the proper nuts, bolts and
other fasteners. “English” and “metric”
fasteners can be easily confused. If you
use the wrong fasteners, parts can later
break or fall off. You could be hurt.
Adding Equipment to the Outside
of Your Vehicle
Things you might add to the outside of your vehicle
can affect the airflow around it. This may cause
wind noise and affect windshield washer performance.
Check with your dealer before adding equipment to
the outside of your vehicle.
Fuel
Use of the recommended fuel is an important part of the
proper maintenance of your vehicle.
Gasoline Octane
Use premium unleaded gasoline with a posted octane of
91 or higher for best performance. You may also use
middle grade or regular unleaded gasoline rated at
87 octane or higher, but your vehicle’s acceleration may
be slightly reduced. If the octane is less than 87, you
may get a heavy knocking noise when you drive. If this
occurs, use a gasoline rated at 87 octane or higher
as soon as possible. Otherwise, you might damage
your engine.
5-4

Corvette C5 2004 Owners Manual Summary of Content

CAUTION: (Continued)Be sure to use the proper nuts, bolts andother fasteners. English and metricfasteners can be easily confused. If youuse the wrong fasteners, parts can laterbreak or fall off. You could be hurt.Adding Equipment to the Outsideof Your VehicleThings you might add to the outside of your vehiclecan affect the airow around it. This may causewind noise and affect windshield washer performance.Check with your dealer before adding equipment tothe outside of your vehicle.FuelUse of the recommended fuel is an important part of theproper maintenance of your vehicle.Gasoline OctaneUse premium unleaded gasoline with a posted octane of91 or higher for best performance. You may also usemiddle grade or regular unleaded gasoline rated at87 octane or higher, but your vehicles acceleration maybe slightly reduced. If the octane is less than 87, youmay get a heavy knocking noise when you drive. If thisoccurs, use a gasoline rated at 87 octane or higheras soon as possible. Otherwise, you might damageyour engine.5-4