I was talking with Dick Weinle the owner of Edgewater drag strip here in Cincinnati. He is a pilot and keeps planes down at his drag strip along with avgas. I am going to fly his plane here soon and am going to pay him for avgas.

He tells me that 100LL avgas is rated differently than car race gas and that 100LL is like 112-113 auto race gas? I really have no idea to be honest, but he should know since he tells me he buys it 8000 gallons at a time and he has had it for many years at his drag strip. I believe he sells it to the racers for there race cars.

Anyone ever heard of this difference in octane ratings?