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:
Hill and Mountain Roads
Driving on steep hills or through
mountains is different than driving
on flat or rolling terrain. Tips for
driving in these conditions include:
• Keep the vehicle serviced and in
good shape ...
StabiliTrak® OFF Light
This light comes on when the StabiliTraK system is turned off.
If the Traction Control System (TCS) is off, wheel spin is not limited.
If StabiliTrak is off, the system does not assist in controll ...
Performance
The Regal I tested packs the base engine — a 2.4-liter four-cylinder that's
good for 182 horsepower. There's no way around it: This is a sedate engine. You
probably won't notice that it lacks po ...