At MSR you can fuel in the hot pit or at the gas pumps. At either location, the car must be off, the driver must be out, someone has to have a fire extinguisher (and, preferably, some sort of drip tray), and all parties involved must be in full race gear.
While we're on the subject, can we get some sort of definitive answer to driver's change rules @ MSR before the upcoming race? At last year's Yee-Haw, the rule was that you could do a driver's change in the hot pit, so long as you were adding fuel as well. Then, at Gator-O-Rama, we were told that we could fuel, but NOT do a driver's change, in the hot pit ... we had to pull into the paddock to swap drivers.
Summer's Eve Racing - '09 Yee-Haw; '10 Gator-O-Rama, NorDal Hooptie, Yee-Haw; '11 Gator-O-Rama, NorDal Hooptie (Winner, Class A!)
TARP Racing - '11 Yee-Haw, Heaps; '12 Gator-O-Rama (Winner, Class C ... Looking for a Class B Win to Complete the Trifecta!), Heaps; '13 NorDal Hooptie, Gator-O-Rama