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For the V6, I saw in the manual where it says that you can use 87 octane and higher with 91 octane recommended for maximum performance.

So...what are you using?

Today, I put my first tank of 87 in to see if there is any noticable performance difference. Too early to tell.
 

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i use 93 since i got my fx
 

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93
 

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93
 

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you'd better, you've got a 45, if you didn't , you'd be going backwards. :shock: I'm the 1st member of the LFXA! :lol:
 

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91 - Chevron
 

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Sunoco Gold 94
 

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93 :D
 

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93 or 91.
 

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Previously Sunoco Ultra 94, but it is now discontinued, so Sunoco Ultra 93 :?
 

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91 - that is the highest in my area
 

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93 - Shell V-Power mostly. Of course I've only put in two tanks of gas so far :?
 

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octane

94 ultra sunoco + bottle of octane boost 104 with each fill.
 
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