Gas Type for Coup Deville 84?

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Gas Type for Coup Deville 84?

What is the octane rating on a 1984 Cadillac Coup Deville?

2006-09-28 12:27:19 · 4 answers · asked by gauthier613 3 in Cars & Transportation ➔ Maintenance & Repairs

4 answers

I would run 87 octane in it ,if it pings or knocks i would up it to 89

2006-09-28 12:34:24 · answer #1 · answered by bayareart1 6 · 1⤊ 0⤋

run 89 octane - dont run cheap 87 or no need for 91 octane

2006-09-28 19:30:39 · answer #2 · answered by CAR GUY 3 · 0⤊ 0⤋

depending on the engine compression..look in your maintance book and see what engine you have...and see if it metions the compression. The higher compression the higher octane of fuel it will need. Search yahoo for compression and octance rates

2006-09-28 19:34:25 · answer #3 · answered by meg2165 1 · 1⤊ 0⤋

you need to use premium

2006-09-28 19:36:34 · answer #4 · answered by catwoman 3 · 0⤊ 1⤋