Buick Lucerne CXS: Regular vs Premium Gas

2 messages, Last post on Nov 13, 2008 at 10:03 AM

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#1 of 2 Buick Lucerne CXS: Regular vs Premium Gas by johnnyblaze3 Nov 11, 2008 (9:26 am)
Are there any CXS owners out there that are running regular gas (87 octane) instead of premium ? If so, are you noticing any differences in the way your vehicle is running? I'm in the market for a new used car, and i have narrowed my choices to the Lucerne CXS and a Maxima. Thank you. Replies to this message: 76ta (Nov 13, 2008 10:03 am)
#2 of 2 Re: Buick Lucerne CXS: Regular vs Premium Gas [johnnyblaze3] by 76ta Nov 13, 2008 (10:03 am)
Replying to: johnnyblaze3 (Nov 11, 2008 9:26 am) My wife uses 87 octane and the performance is OK. City MPG is 16 - 17. That being said, MPG and performance may improve using 89 or 91 octane. Premium is "recommended but not required" according to GM.