[F500] Fuel question

[Gene D. Bennett]

>Uh, Oh!  Here's that fuel thing again.  This has come up a number of 
>times on this net in the last two years and some very knowledgeable 
>advice has been given (to me too)  Check the archives on this 
>website = very good information. The bottom line is this:  For SCCA 
>National and now Regional road racing the fuel will pretty much 
>universally be tested at the track.  No pump gas will pass!  None at 
>all.  l00 LL Aviation Gasoline does not pass.  About the only thing 
>that passes is good, pure, carefully monitored racing gasoline.  It 
>is best to by it at the track (be sure SCCA officials have tested 
>and approved it for your event) and pay the enormous $5 to $6 per 
>gallon cost.  If you buy it in bulk, as some of the F5 serious 
>competitors do, you must closely monitor it and keep the drum closed 
>(sealed) as much as possible to avoid contamination.  
>      I can't answer for non-roadracing competitors but I know the 
>494 Rotax manual calls for "unleaded premium" gasoline and I know 
>from experience (that reads disqualification) this engine runs great 
>on Amoco Super Premium unleaded.
>      One final comment.(also from experience)  Once you introduce an 
>illegal fuel into your fuel cell, like unleaded pump gas, it takes 
>two or three fills of "legal" fuel to clean out the contaminated 
>fuel from the cell.

The August FasTrack http://www.scca.org/news/fastrack/02-08.pdf has a 
fuel protest that was denied.  The car had raced the CART Toyota 
Atlantic Series the day before and the spec fuel for the CART class 
failed the SCCA fuel specs.

There's also a GCR clarification regarding fuel sampling in that issue.

Gene