What kind of fuel does the 2004 Cadillac Escalade-ESV use?

The 2004 Cadillac Escalade ESV used unleaded gasoline. While the specific octane rating recommended might vary slightly depending on the engine (it likely came with either a 4.8L or a 6.0L V8), regular unleaded was generally acceptable, but premium unleaded would be preferable for optimal performance. Always check the owner's manual for the specific fuel recommendations for that year and model.