Ultranomad wrote:
While not specially blended for GA, ethanol-free mogas does exist.
Car fuel in the Isle of Man is ethanol-free. Mainly because there’s no facility to make E blends here.
Wouldn’t the simplest way be to have generalized STCs for some form of 100UL like in the US? As an in-place replacement of the whole 100LL distribution network (probably at similar price). Coupled with the ban of 100LL (which is definitely missing from the US roadmap) this could help a rapid and (mostly) smooth transition from TEL.
Engines requiring good anti-knock fuel properties will keep requiring them to stay within their design limits, and that’s the case with 100UL. Definitely not the case with 91/94UL.
The 100UL promoters want to make money out of STC licensing. They will never make the fuel itself.
How to make 100UL has been known since roughly 1940 
Peter wrote:
The 100UL promoters want to make money out of STC licensing. They will never make the fuel itself.
If they price these STCs like Petersen has for the mogas STCs, it’s not a problem whatsoever.
Airborne_Again wrote:
The engines, yes — but not the fuel system.
lots of Lycoming powered aircraft fed with 100% cheapest car gas, for many many years, no adverse effect,
on the other hand, brand new pipistrel high wing suffering very badly due to mogas dilluting the integral fuel tanks
Ultranomad wrote:
Unfortunately, all grades of Shell V-Power are no longer ethanol-free.
last time I checked the V-Power Racing sold over here it contained less than 1% of ethanol
We have this before in many threads but ethanol is a real problem for lots of material in GA fuel systems, whether wet tanks or bladder tanks.
Yes car petrol may have worked for many decades, but it didn’t have ethanol, and it did have lead So provided you don’t fly above a few k feet, and don’t fly on hot days, there is no likely to have been a problem in the past.
Stuff like o-rings is fixable easily but tank sealants or tank bladders, not so easily.
last time I checked the V-Power Racing sold over here it contained less than 1% of ethanol
Unique to Poland, probably, so OK if you never leave Poland.
Guys the simplest way and what 99% will be coming is AVGAS 100VLL.
Just stay short of the maximum possible amount and huraay here we are. Everything changed and nothing changed at the same time.
The European 100LL business is worth around €300M a year…
A rough approximation of this value means that there are 30.000 (avgas) airplanes in Europe. Are there really only ~600 planes in each of the 45 countries?
This thread has loads of data. It is well worth a read.
Most of Europe has almost no GA.
Ultranomad wrote:
Unfortunately, all grades of Shell V-Power are no longer ethanol-free.
The Shell Luxembourg website still contains the statement that Shell V-Power (gasoline, 98 octane) doesn’t contain ethanol. 🤷
lionel wrote:
The Shell Luxembourg website still contains the statement that Shell V-Power (gasoline, 98 octane) doesn’t contain ethanol.
Thanks for the info! Looks like it varies from country to country. There are also different grades of V-Power in different countries.
