Should I use premium or regular gas?

Asked by Stefan May 27, 2018 at 06:34 AM about the 1983 Cadillac DeVille Coupe FWD

Question type: Maintenance & Repair

Well every since I got it I’ve been using regular number 87,
and I’ve heard that Cadillacs should take premium. It
didn’t come with the owners manual so I can’t just look in
there as I would expect that’s where it would say so at.
I’m still new to cars so I’m just coming here for a little bit
of info and understanding thanks.

1 Answer
195

Kyle answered 6 years ago

You should fill it up with premium. If you use unleaded on this model, the engine will not run to it's full potential, and could even knock.

Mark helpful

Your Answer:

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