What is the difference in a cabin filter and air for 2008 Cadillac dts?

There's no difference between a "cabin filter" and an "air filter" for a 2008 Cadillac DTS *in terms of what they are*. The terms are often used interchangeably for the filter inside the car's cabin.

The 2008 Cadillac DTS has two air filters:

* Cabin Air Filter: This filter is located inside the passenger compartment, usually under the dashboard or glovebox. It filters the air that enters the vehicle's ventilation system, removing pollen, dust, mold spores, and other contaminants before they reach the passengers. This is what people usually mean when they say "cabin filter".

* Engine Air Filter: This filter is located in the engine compartment and filters the air going into the engine. It prevents dirt and debris from entering and damaging the engine. This is a completely separate filter and *not* what's usually referred to as a "cabin filter".

So, if someone is talking about a filter for a 2008 Cadillac DTS, clarify if they mean the cabin air filter or the engine air filter to avoid confusion. They are distinct filters with different locations and functions.