This is similar to a query I recently sent to AOPA, but thought the folks who frequent this site might be able to offer some insight on an issue that has me a bit perplexed.
There has been news over the past two years indicating the impending availability of unleaded aviation gasoline dubbed 82UL. The AOPA web site and other sources have said that leaded aviation gasoline would some day no longer be available. I’ve also read that Alan Klapmeier believes that currently-produced turbocharged aircraft engines will not be able to run on 82UL while non-turbocharged engines will.
I have several questions:
Is the demise of 100LL an event that is actually being planned by someone? Has this action been mandated by EPA or some other regulatory agency or this just a belief that refineries will tire of producing the stuff? Is there a timetable for phasing out 100LL?
If 100LL goes away, what happens to the current GA fleet? Will Continental IO-360, IO-520 and IO-550 engines run on 82UL? How about Lycoming IO-360 and IO-540 engines? Will turbocharged engines be affected differently? Will turbo-normalized engines be affected differently than factory-delivered turbocharged engines?
I would be grateful for any insights readers of this forum might offer.