Here's what it says in supps.
"9.12. Fuel: All cars shall use fuel that was purchased from the track at the current year’s Runoffs. SSB, SSC and SM are limited to 93 octane unleaded
gasoline. All other classes, except those required to use diesel fuel, may choose to run any of the available gasolines. These include 93, 98 or 100
octane unleaded and 110, 112, or 116 octane leaded gasoline. The 93 and 100 octane unleaded fuels contains ethanol. Fuels should not be mixed
(ie. 98 and 100 octane). The track fuel pumps will be open Saturday, September 15th through Sunday, September 23th, 2012. 98 and 110 octane
gasoline will be available 24 hours via credit card at the permanent pumps. 93 and 100 octane gasoline will be available via attendant 8:00am-10am,
(9/15-9/16) and 8:00am-4:00pm (9/17-9/23). 112 and 116 octane gasoline and diesel fuel will be available only if pre-ordered through Smith Oil at
877-229-8105 or Roger Breeland (
[email protected]) or Marty O’Brien (
[email protected]).Orders for 112, 116 and diesel fuel should
be made before August 26th, 2012 to ensure availability. Only 112, 116 and diesel fuels will be sold in drums.
• Competitors shall declare which fuel they are using.
• Mixing fuels of different octanes is prohibited.
• These fuels shall be purchased from Road America and will be tested in accordance with the official Runoffs® fuel testing procedures including
physical properties, dielectric constant, and specific gravity. These procedures will be available in Tech.
• Before Tuesday’s first session or if you have changed fuel brands or types, at a MINIMUM, we recommend draining your tank/cell, then adding a
few gallons of your chosen fuel, run the car and drain the tank/cell again. Adding Runoffs compliant fuel to a fuel tank/cell containing significant
quantities of other fuel already in the fuel tank/cell is likely to result in test failures.
• Fuel testing will be available to all competitors on a voluntary basis subject to the workload in tech. Priority will be given to competitors who have
not yet had their fuel tested. The scheduled times for voluntary fuel testing will be posted at Tech.
• Fuel testing for compliance with these supplemental regulations may be implemented during qualifying and post-race inspection.
• Shipment of fuel samples to Chempro for analysis will not be possible during the Runoffs since all activities must be resolved during the event."
I read it that fuel brought in may fail the test. I do know in the past they have added something to the fuel to insure it was track purchased fuel. Not my area of tech, but I would hate to see someone DQ'ed because of trying to save a few bucks.
