Adding Equipment To The Outside Of Your Vehicle; Fuel; Gasoline Octane - Chevrolet 2007 Monte Carlo Owner's Manual

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. To
help keep your engine clean and maintain optimum
vehicle performance, GM recommends the use
of gasoline advertised as TOP TIER Detergent
Gasoline.
The 8th digit of your Vehicle Identification Number
(VIN) shows the code letter or number that
identifies your engine. You will find the VIN at
the top left of the instrument panel. See Vehicle
Identification Number (VIN) on page 394.
298
If your vehicle has the 3.5L V6 engine (VIN
Code K only), you may use either regular
unleaded gasoline or ethanol fuel containing
up to 85% ethanol (E85); also see Fuel E85
(85% Ethanol) on page 301. In all other engines,
use only regular unleaded gasoline.

Gasoline Octane

For all vehicles except those with the 5.3L V8
engine (VIN Code C), use regular unleaded
gasoline with a posted octane rating of 87 or higher.
If the octane rating is less than 87, you may notice
an audible knocking noise when you drive,
commonly referred to as spark knock. If this occurs,
use a gasoline rated at 87 octane or higher as
soon as possible. If you are using gasoline rated at
87 octane or higher and you hear heavy knocking,
your engine needs service.