Octane?

[2midnite]

Let me apologize in advance if I seem a bit dull, but I'm not exactly a gearhead. Anyway, I always ran 87 octane, as was recommended, in my 2006 Fusion SE. When I bought my 2012 Sport earlier this year I assumed that I should continue to use 87 since the dealer never stated otherwise and I couldn't find any recommendation in the manual. Last fill-up I decided to use 89, and I feel that the engine runs smother and is more responsive, though it very well might be all in my head.

 

So my question is what is the recommended gasoline grade for a stock sport? Is there any advantage or disadvantage to running 89 octane?

[FusionDiffusion]

The minimum recommended octane is 87. You may or may not experience better results with higher octane. Use what feels best to you. Penny pinchers will tell you to stick to 87 octane.

 

This topic has been discussed in length recently, so I suggest you read this: http://www.fordfusionforum.com/index.php?/topic/8956-lets-debate-on-gas-regular-or-premium-which-is-the-best/

[2midnite]

Thanks for the link. Interesting read, though it seemed to devolve into a bit of a pissing match at points! I think it answers my question though and explains why I had some difficulty finding concrete answers.

[SlowLSJ]

Just use 87. On hot 90f plus days add

alittle 89 for so you won't ping

Edited December 15, 2012 by SlowLSJ