What is the viscosity comparison between turbine fuel and aviation gasoline?

Turbine fuel, specifically Jet A or Jet A-1, generally has a higher viscosity compared to aviation gasoline (AVGAS). This characteristic is primarily due to the different chemical compositions and refining processes involved in producing these fuels. Turbine fuels are designed for high-efficiency combustion in jet engines, which often necessitates a thicker fuel for better lubricating properties and to handle the higher operational temperatures and pressures within turbojet and turbofan engines.

Aviation gasoline, on the other hand, is formulated for use in piston engines and has a lower viscosity, allowing for easier flow and atomization in lower-pressure conditions present in carbureted and fuel-injected piston aircraft engines. While some variability in viscosity might occur due to temperature changes and specific fuel blends, turbine fuel is consistently recognized for its higher viscosity compared to aviation gasoline, making the chosen answer accurate in the context of fuel properties.