rando
Senior Member
In any case, we're getting slightly off topic. The 03-04 V8 can use 91 octane as stated in the manual. The question is, has the Sulfer fix made the use of 91 octane more advantageous than before? I understand that it could just be a random sample that outlies my normal MPG for several reasons -- some of them discussed in the last two posts. That's why I'm asking to see what others have observed.
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