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2005-2009 Saleen Mustang For all S281, S302, H281 and H302 models based on the Ford S-197 Mustang platform, with the exception of the S302 PJ (see below). Be sure to specify year, model and equipment if asking for help.

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  #1  
Old 05-06-2017
Lillington Lillington is offline
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Default New Owner Q's: Fuel Grade?

Recently purchased 07 S281 #214.

What fuel do I need to use? Premium? Higher Octane? I cannot find any info anywhere. Feel free to laugh at me. I just wanna go for a DRIVE!!
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Old 05-06-2017
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tbar tbar is offline
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They recommend Premium. Should say it right under your speedometer.
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Old 05-06-2017
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Dave Dave is offline
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Congratulations on your new purchase!
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Old 05-06-2017
Lillington Lillington is offline
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Thanks Dave!

Yeah I'm an idiot, it was right there when I opened the door to remove the gas cap. Filled it up and went for a cruise. Can I ask a question about what speeds I should be shifting at? I've been letting the RPM's get to about 2500-3k before shifting up for cruising.
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Old 05-07-2017
jcar302 jcar302 is offline
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Anything with a supercharger or turbo needs premium for sure, or the computer will pull timing.

As for shifting, get to know the car and how it feels and shift whenever you like.
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Old 10-19-2017
Mainecobra Mainecobra is offline
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Quote:
Originally Posted by Lillington View Post
Recently purchased 07 S281 #214.

What fuel do I need to use? Premium? Higher Octane? I cannot find any info anywhere. Feel free to laugh at me. I just wanna go for a DRIVE!!
Run 93 octane as much as possible and the minimum run 91 if u cannot find 93 octane. 93 octane is best as this will reduce any chance of detonation. Ideally you want to have a wideband air / fuel ratio gauge so you can read A/f ratios as if you get a bad tank of gas and your motor is detonating you will see it in the gauge showing it running lean. If your at stock boost as well as tune probally not a huge concern but run 93 always if possible 91 if not but no lower ever.
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