Shift from Leaded to Unleaded: Avgas 100LL vs. Avgas UL91/UL94
By Vincent Wigmans —
Introduction Avgas The aviation industry has long relied on Avgas 100LL (Low Lead) as the primary fuel for piston-powered aircraft. However, concerns about environmental impact and health risks associated with leaded fuels, have led to the development of unleaded alternatives. Two of these alternatives are Avgas UL91 and UL94, designed to offer similar performance while … Continued