In case you are not aware the ethanol will only stay in solution with the
petrol up to about 1% water saturation which in theory means your 70 litre
fuel tank could contain 1.7 litres of straight alcohol in the bottom of the
tank if it falls out of solution due to humidity etc. I doubt 1.7 litres
would be enough to do any damage but its worth thinking about.
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com]On Behalf Of Remi Guerner
Sent: Wednesday, 25 February 2009 7:43 PM
To: Europa-List Digest Server
Subject: Europa-List: Alcoholic Mogas
Hi all,
During the last few days, I tested several samples of Mogas (all purchased
in the Paris area) to determine if they were containing alcohol. The results
are as follows:
95 Unleaded from a supermarket: about 2,5 % alcool
95 Unleaded from a well known brand: about 2,5 % alcool
98 Unleaded from a well known brand: no alcool
For those not familiar with french designation of Mogas, 95 Unleaded is
our basic mogas while 98 is Super.
Rotax says alcool in the fuel should be avoided but tolerates up to 5% (SI
912-016 R1) so we can assume there is probably no risk with the engine up to
that ratio. I do not think there is a risk either with our fuel lines as
most of us are using automotive hoses designed for mogas. Same for fuel
pumps. But what about the fuel tank which is already subject to bulging and
cracking even without alcool? What about fuel pressure sensors? Fuel flow
sensors?
As more and more alcohol will be introduced in mogas in the near future,
it would be beneficial to all of us to know better about its side effect on
our fuel system.
Looking fwd receiving documented answers from experienced people.
Regards
Remi Guerner
F-PGKL
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