Auto >> AutoSPT >  >> Electric car

What is the required fuel octane rating to be used in a 2005 Cadillac De Ville?

The 2005 Cadillac DeVille requires a minimum octane rating of 87 (regular unleaded). However, using a higher octane fuel (like 89 or 91) won't hurt the engine and might provide slightly better performance, but it won't be necessary.