See also:

Engine Oil Additives / Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the starburst symbol that meet GM Standard GM6094M are all that is needed for good performance and engine protection. Engine oil system ...

Weatherstrips
Apply silicone grease on weatherstrips to make them last longer, seal better, and not stick or squeak. See Recommended Fluids and Lubricants. ...

Interior
The cabin utilizes premium materials, and there is an optional navigation system. The Regal has a sizable trunk that measures 14.3 cubic feet, and there is a wide opening to both the cargo area ...