Originally Posted by soup325
Avtur or Jet A1 is the diesel 'type fuel' used in turbine engines.
Avgas over here or '100-130' (color green) is the stuff Theon is taking about. The lead in the fuel does four things - inhibit knock, give you a bigger bang, lube up the upper cylinder and gum it up (eventually).
Engines should be able to run, higher compression and more advanced timing.
Avgas sold in the US - is called 100LL or Low lead (color light blue) has less lead per gallon.
The purple Avgas 130 -145 (color purple) is the best stuff still made. If your able to get a hold of it, let me know. They only really make it for the reno air races now.
engines not tuned for Avgas will usually cause some damage - whether its burnt out exhaust valves etc.
RC engine run on a nitro mix, a methanol-based fuel with nitromethane and oil added
I don't know much about the fuel they dispense at the Reno Air Races other than it smells different and makes the planes go like stink. I live in Reno and never miss the race every year.