Hartmut wrote:

> I was just reading through the Continental Spec sheets. 

> They mention that it is ok to run fuel with up to 3% alcohol 

> in that to prevent icing in the carburetor. So alcohol per say 

> is not the problem, it is the amount of it. With current fuels 

> carrying up to 5% alcohol in the mix, one could safely fly a 

> 100LL/Gasohol 95/5 mix. 

 

 

Hum-m-m.  Here in the U.S., auto fuels normally carry up to 10% ethanol.  I
have heard of bad mixes causing higher percentages on occasion. (Not a
problem for cars.)

 

So, in the U.S., to stay below 3%, you'd need to have 75% 100LL and 25%
mogas (approximately).

 

That data about allowed alcohol content is worth cross-checking.  Had I been
able to have gas line deicer in my tank, I might not have had my
entertaining off-airport landing.

http://ercoupe.org/Fly-in%20Reports/Gas-line-ice.htm 

 

When we put the gas line deicer in the nose tank after the forced landing,
that ice was cleared out of the plugged firewall metal fitting in SECONDS!
And, it dissolved the nearly 1" thick ice flow in the gascolator in less
than a minute.  I was impressed!

 

In very cold weather operations I'd prefer to add appropriate gas line
deicer if it were allowed.

 

Ed Burkhead

http://edburkhead.com/Ercoupe/index.htm           East Peoria, Illinois

ed -at- edburk???head.??com                      (remove the ? marks and
change -at- to @)

 

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