does anyone use 100LL av gas ?

ive worked around 100ll for years, it is a safe clean fuel, a piston engine aircraft hardest job is accelerating from dead stop down a runway to take off, so it is not a high altitude only fuel, aircraft can richen or lean for the conditions with exh.temp gauge. sure it has lead thats what increases octane and it good for the valve seats. some aircraft are certified to use 87 octane auto gas and or 100ll so it can be mixed, aircraft dont always fly so yes stabilizers are added, ive used it in 340s , 12.5 comp 440s and use it to cruise around in my 16.1 572 but not drive it hard or race it with that much compression, the 130ll i wish it was still around.