Oil refineries add 0.5 grams of Tetraethyllead (TEL) per gallon to 80/87 fuel. But why?
A warning from the past for unleaded avgas
by Ben Visser | Aug 17, 2025 | #Aircraft, 20250821, avgas, Aviation Fuel, Aviation News, flying, General Aviation, Opinion, Pilots, unleaded avgas, Visser's Voice | 0 comments