What kind of motor oil does a Buick Riviera superchared take?

The specific type of motor oil for a supercharged Buick Riviera depends on the year of the vehicle. Buick's recommendations changed over the years, and the supercharger adds extra demands on the oil.

You absolutely MUST consult your owner's manual. This manual will specify the exact oil type (weight, viscosity, and API certification) recommended by Buick for your specific year and model Riviera.

Failing to use the correct oil can severely damage the engine, especially one with a supercharger. The increased stress and heat from the supercharger require an oil that can handle those conditions.

Don't rely on general advice found online – use the information provided by Buick for your particular car.