Thor Forums

[Chance]

Originally Posted by Bob Montgomery

....cut.... Ford put it on their computer and could not find any problems... do you think the grade of gas has any affect on it? Thanks for your input.

My 2 cents....

Fuel quality can certainly affect how an engine runs, but running octane rating higher than necessary won't help in my opinion.

My V10 (2-valve model) just turned 150,000 "easy" miles last night driving from Texas to Florida, and I have never had any surging or other problems. While I only run 87 Octane, I buy it mostly from Exxon or other major brand (Shell, Texaco, Chevron, etc.). I avoid all generic fuel stations.

I trust (perhaps I shouldn't ????) that major brands have higher quality control and use better fuel additives. There is a lot of controversy on this subject, so I play it safe even though it cost a bit more. On the other hand, I won't pay for higher Octane.

Your Ace has the 3-valve V10 but that in itself shouldn't make a difference.