Recommended Fuel
If the vehicle has a 2.4L L4 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, an audible knocking noise, commonly referred to as spark knock, might be heard when driving. If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
If the vehicle has the 2.0L L4 engine (VIN Code V), use premium unleaded gasoline with a posted octane rating of 91 or higher.
You can also use regular unleaded gasoline rated at 87 octane or higher, but the vehicle's acceleration could be slightly reduced, and a slight audible knocking noise, commonly referred to as spark knock, might be heard. If the octane is less than 87, a heavy knocking noise might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. Otherwise, you could damage the engine. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
See also:
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
When it is safe to lift the hood:
2.4L L4 Engine
2.4L L4 Engine
A. Engine Cooling Fans (Out
of View)
B. C ...
Headlamp Wiring
An electrical overload may cause the lamps to go on and off, or in some cases
to remain off. Have the headlamp wiring checked right away if the lamps go on and
off or remain off. ...
Vehicle Overview
Buick joined the minivan market for 2005 with the Terraza, which features
sliding side doors and a low step-in height. For 2006, the Terraza can be
equipped with a new 3.9-liter V-6.
Two version ...