It's being actively phased out. The replacement for 100LL was literally just approved by the FAA a year ago, after decades of work. Many of the bay area airpor

It's being actively phased out. The replacement for 100LL was literally just approved by the FAA a year ago, after decades of work. Many of the bay area airports have already started offering 94UL unleaded fuel, and the others across the country are likely to follow suit shortly.