I have a 2000 Cadillac ElDorado w/ 105,000 miles.
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2000 Cadillac Eldorado Question: Can I use regular fuel instead of premium ?
Answer #1patrick mannion from Greg Solow's Engine Room, September 17, 2009, 18:28Master
I think Cadillac called for 91 octane on that car the engine has a knock sensor and diminishes performance if it detects detonation due to lower octane fuel. Check your owner's hand book and or call your Cadillac dealer see what they advise.
Answer #2caddy2000 October 20, 2009, 21:27Enthusiast
yes caddys 2000 and newer can run on regular gasoline the computer will adjust for it