I have been using 100LL in my engines since 80 went away and never had it "Stall" or foul the plugs. Mogas will make your airplane and hangar stink.
Kevin --- In [email protected], "fnelson913" <[EMAIL PROTECTED]> wrote: > > John, > > I agree with everything that you have said. However, the information > for the fly-no-fly 5% and acholol testing was in the same package as > the EAA Mogas STC with the same letterhead. In fact the STC requires > that the acholol testing instructions be onboard with your POH. It > does seem like conflicting instructions, but one might be for legal > purposes and the other might be for practical/realworld purposes. It > seems the EAA has drawn the line with E10 which is where state > legislation is headed in most states. > > It seems like I have the choice of having a stalled engine because of > a stuck valve by using 100LL with the resulting lead fouling or > having a stalled engine because Mogas might have alcohol in it that > separates in flight. I think I will "test" my Mogas for alcohol in 5 > gallon quantities. Then I will separate the resulting "water/alcohol > stage." And then I will "test" it again for alcohol. There seems to > me that there will be some point I will find little or no alcohol > remaining in my fuel even though it might be 3 points lower on octane. > > My other choice is to use 100LL that is treated with TCP (that is not > currently available and needs special handling because it is > explosive). > > Frank Nelson > > --- In [email protected], John Roach <planejohn@> wrote: > > > > Frank, > > I believe the EAA position on ethanol is not to use it under their > STC. > > Here is a quote about compliance from the EAA web site: > > /"EAA STC approvals are for the use of unleaded regular automobile > > gasoline, *excluding gasoline containing alcohol*, manufactured to > the > > ASTM Specification D-4814 (American Society of Testing Materials, > 1916 > > Race St., Philadelphia, PA 19103). Specification D-4814 superseded > > Specification D-439. " > > /The 5% figure you refer to is also from their web site in an area > > discussing alcohol that may be in gasoline. This information is > found on > > a page which speaks of how to detect alcohol in your gas, how to > measure > > the amount of alcohol in your gas, and the effect of alcohol on > your > > engine and fuel systems. Many EAA members are flying experimental > > (rather than certificated) aircraft and I believe they have more > freedom > > as to fuel choice than pilots of certificated aircraft. The 5% > alcohol > > level is noted DO NOT FLY as a warning that there is danger to > being off > > the ground with 5% or more alcohol in your tank. However, the mogas > STC > > is pretty plain -- NO ethanol is approved. > > I believe the recent EAA article about mixing mogas and 100LL > referred > > only to unleaded mogas and was in reference to the use of this mix > to > > control lead deposits while TCP was unavailable. I saw nothing in > the > > article that referred to ethanol or changed the EAA position as > quoted > > above. > > > > John Roach > > N 2427H > > >
