what octane gas is recommended for a '07 Buick

pretzgolf

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look In YOUR CAR MANUAL.It will tell you everything about your auto.
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lesmore49

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Buick Ownership
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I use regular gas (87 octane) in my '07 Allure (LaCrosse). I have the Buick 3800 V6...I don't know what Buick recommends for the optional engine...the 3600 cc V6.
 

Super

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Buick Ownership
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Most modern GM ECU's will advance timing based on the octane you put in. 87 will work fine except for the Super where a minimum of 91 is recommended (87 will still work at reduced power). Least $$$ per mile will probably be from 87. Most power, mpg and distance per tank will probably be had from 93 or 94 octane. Pay your money and take your choice.
 
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