Gasoline Octane; Gasoline Specifications - Pontiac Vibe 2003 Owner's Manual

Gasoline Octane

If your vehicle has the 1.8L engine (VIN Code 8), use
regular unleaded gasoline with a posted octane of 87 or
higher. 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. A
little pinging noise when you accelerate or drive
uphill is considered normal. This does not indicate a
problem exists or that a higher-octane fuel is necessary.
If you are using 87 octane or higher-octane fuel and
you hear heavy knocking, your engine needs service.
If your vehicle has the 1.8L H.O. DOHC engine
(VIN Code L), use only premium unleaded gasoline with
a posted octane of 91 or higher. In an emergency,
you may be able to use a lower octane — as low a 87 —
if heavy knocking does not occur. Refill your tank with
premium fuel as soon as possible. Otherwise, you might
damage your engine. If you are using 91 octane or
higher-octane fuel and you hear heavy knocking, your
engine needs service.
Gasoline Specifications
It is recommended that gasoline meet specifications
which were developed by the American Automobile
Manufacturers Association and endorsed by the
Canadian Vehicle Manufacturers Association for better
vehicle performance and engine protection. Gasoline
meeting these specifications could provide improved
driveability and emission control system performance
compared to other gasoline.
Canada Only
In Canada, look for the
"Auto Makers' Choice"
label on the pump.
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