2008 and Premium Gas

I have an 06 mx5 and an 89 f250 (big block>big gulp)
I hav never tried running the Miata on anything other than super, but I did
try economizing on the truck for a # of years. (Ford recommends super for IT
as well) What I found is that I suffered a signifigant loss of power as well
as trouble on hills.
Most front end power adders are all designed to do one thing, get
hydrocarbons to mix with oxygen for increased power and this also adds
milage. Higher octane fuels equal more power.
Buy the Miata, deal with it at the pump, you won't be sorry.

My '06 MX5 runs OK on mid-grade, but it's a lot more fun with a tank of
premium!

I wonder if there is a significant difference in MPG between grades of fuel?


Phil Woolfson wrote:
> I have an 06 mx5 and an 89 f250 (big block>big gulp)
> I hav never tried running the Miata on anything other than super, but I did

> Buy the Miata, deal with it at the pump, you won't be sorry.

CR > wrote:

> My '06 MX5 runs OK on mid-grade, but it's a lot more fun with a
> tank of premium!
>
> I wonder if there is a significant difference in MPG between
> grades of fuel?

Yes and no. Vehicles equipped with knock sensors will retard the
ignition timing when knock is detected and that will reduce economy and
performance. If you drive with a very light foot so as to never cause
the engine to knock there'll be no difference between fuels but... If
you drive with a very light foot, why did you get a MX5? <G>


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