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It's the end of January 2019, cheap gas is plentiful in the USA. No reason NOT to use premium fuel at $2.19/gallon in my area.
 

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Wondering if anyone could give me the heads up in regards to gas to use in my 350Z. Previously had a maxima that I only used regualr unleaded in instead of the premium unleaded like was plastered all over the gas cap and manual and never had one problem (turned 200,000 miles last week)....does this hold true for the 350z? Don't want to push my luck but no need to pay the extra if there really is no need....thanks​
 

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The answer is the same in 2020 as it was when this was first posted in 2007. The VQ engine series was engineered to take advantage of PREMIUM fuel. The compression ratio, cams and advanced timing need higher octane fuel to achieve maximum performance. So pay a little extra for the good stuff if you drive a 350Z!
 
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