Pulling ethanol out of gas

Gdetrailer wrote:

JaxDad wrote:

Gdetrailer wrote:
By the way, running 93 octane is not only a waste of your money but also potentially damaging your equipment.. That higher octane can delay the burn in th cylinder to the point of the exhaust valve opening on 4 cycles burning the valve.. On 2 cycles, that can damage the exhaust port and/or scorch the piston.

Myself and almost every other private pilot I know runs 100LL in all their small engines, always have, never a problem.

Most of those "pilots" most likely do not own their "small engines" equipment LONG ENOUGH to notice that damage..

Airplane engines are one thing, they ARE DESIGNED from the ground up to RUN 100 Octane fuel..

Apparently you lack an understanding of both pilots and the planes they fly.

Pilots are used to operating and maintaining engines that are often MANY decades old. Small engines are the same, why throw away a perfectly good engine just because it's a few years old. The mower we use to cut around the aircraft tie downs at our airport is a 1960's National Triplex powered by the original Koehler 8hp. The 'mule' we use to jockey aircraft around is a 1940's WW2 surplus Jeep. All of them run on AVGAS and have since they arrived at the airport.

One of mine, the one I fly most often, was designed in 1942 and mine was built in 1953. It was DESIGNED to run on "80/87" (dual octane ratings indicate the octane at lean mixture used for cruising along and rich mixture for climb out) but since that fuel was phased out some 25 years ago the nine has been running on 100/130. The manufacturer Lycoming said that this is just fine with them.