Buick Enclave: Recommended Fluids, Lubricants, and

 Recommended Fuel. Gasoline Specifications (U.S. and Canada Only). California Fuel Requirements

Recommended Fuel 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

 Ultrasonic Parking Assist. Rear Vision Camera (RVC)

Ultrasonic Parking Assist If available, the Ultrasonic Rear Parking Assist (URPA) system assists the driver with parking and avoiding objects while in R (Reverse). URPA operates at speeds less than 8 km/h (5 mph). The sensors on the rear bumper are used to detect objects up to 2.5m(8 ft) behind