Gasoline Octane
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.
See also:
TTY Users
OnStar has the ability to
communicate to the deaf,
hard-of-hearing, or speech-impaired
customers while in the vehicle. The
available dealer-installed TTY
system can provide in-vehicle
acce ...
New Vehicle Break
Notice: Your vehicle does not need an
elaborate break-in. But it will perform better in
the long run if you follow these guidelines:
• Keep your speed at 55 mph (88 km/h)
or less for the first 5 ...
Selecting the Right Engine Oil
Selecting the right engine oil depends on both the proper oil specification and viscosity grade:
Specification (Except 2.0L Turbo Engine)
Use and ask for engine oils with the dexos™ certification ...