baswell wrote:It's incredibly stupid that an industry which contributes relatively little to polution and for which it is the hardest to switch from oil is being pressured the most to do it.
I don't see the industry is being pressured to move to oil, it's just it happens that one alternative being developed by Swift is from renewable sources. Or at least was, according to Jack. Continental and Lycoming are both pushing unleaded versions of normal AVGAS. Also if I recall correctly, Dave mentioned a while back that one of the reasons AVGAS is more expensive that MOGAS is the the distribution system (which is shared between the two) has to be cleaned before and after 100LL is pumped through it. Instead the industry is being pushed to get lead out of their fuels. Lead, is a nasty, nasty substance and frankly the GA community should have moved off it it years ago as the auto industry did.
To me this leaves the aviation community with two options.
1) Shadow MOGAS and come up with a UL version of AVGAS; one that won't require the pipelines to be cleaned pre and post use. This would, I'd imagine, keep costs down unless the Oil companies keep savings as profits.
2) Since the fuel distribution system already has to be cleaned when AVGAS passes through it, find some "green" alternative. In the long run renewable fuel sources will be cheaper. Plus the it would be a nice PR selling point for GA.
I believe the main difficulty with the switch off 100LL is the fact that your typical GA engine is designed to specifically operate synergistically with the lead in AVGAS.