See also:

How to Inspect the Engine Air Cleaner/Filter
To inspect the air cleaner/filter, remove the engine air cleaner/filter from the vehicle by following Steps 1 through 6. When the engine air cleaner/filter is removed, lightly shake it to release ...

Fuel Additives
To provide cleaner air, all gasolines in the United States are now required to contain additives that help prevent engine and fuel system deposits from forming, allowing the emission control syste ...

Advanced safety features based on 'control and alert' strategy
The Cadillac XTS' technology fundamentally supports a suite of advanced safety features, based on a "control and alert" strategy that extends the vision around the vehicle. It helps driv ...