I can't find where this thread started, but re: the weight of Swift fuel: Thank you for your interest in Swift's 100SF avgas replacement. My name is PJ Catania, and I am the Formulation and Certification Lead for the fuels department here at Swift. To answer your question, the weight of Swift Fuel is about 6.68 lb/gallon, which is just about a half pound heavier than 100LL. Most pilots do their flight plan using 6 lb/gallon for avgas, but most of the time it ends up being closer to 6.25 lb/gallon.
If you have any other questions, feel free to email me back directly.
Thanks again for your interest,
If you have any other questions, feel free to email me back directly.
Thanks again for your interest,