I typically run mid-grade fuel (89 octane) in my CRX Si. I know in a lot of cases it's pointless to run premium unless the particular motor (high compression or boosted) requires it. I use Chevron Fuel System Cleaner every other oil change. What have been people's experience on the low compression (non-S n/a) 944s.
<img border="0" alt="[burnout]" title="" src="graemlins/burnout.gif" />

 

It is always pointless to run higher octane than required by the engine.
If a engine is not having problems with a certain octane fuel there is no point in using higher octane fuel unless you do some tuning to the engine.

Regards:
Eirik Kvello-Aune
<a href="http://www.diateam.no/porsche" target="_blank">www.diateam.no/porsche</a>