Ethanol in gas
I was told today that the ethanol in gas is deteriorating the gas lines on my chain saws.I havent had this problem on anything else.Only my Husky and Sthil saws.there is supposedly a bullitan that Echo put out on the subject.Anyone heard of this??
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Handload
I've used mogas out of a low wing Bonanza for a number of years starting with the first fuel crisis in the early '70s and ending in '82. Much of the time was over 10,000ft.
There was never a hint of vapor lock with mogas at the time.
In checking an AD on the engine fuel pump drive, I disassembled the pump to replace the vanes and found a gasket severely swollen.
The gas tank bladders also grew from fuel exposure. I found a screwdriver plus several cardboard cap seals from Drygas in one tank.
The fuel filter screen under the combo manual boost pump/ fuel selector switch was almost filled with a grease Gooplike substance.
All the fuel system components according to their manuals were certified for aromatic fuels.
During that period Mogas STCs were approved for some aircraft.
If I'm not mistaken you also had an engine driven fuel pump on your O-470 Continental as gravity will not supply enough fuel to the engine.
Then as now I dont believe Mogas is good for long term health of airplanes.0 -
"But I did get tired of yanking on Sthils garbage"
Les, you poor, unenlightened boy. I hope you will some day come to the light.
Stihl is good, very good. Now do you see?0 -
quote:The internal combusion engine is a "heat exchanger" system. The fuel produces heat in BTU's that produce the power. Ethanol, gallon per gallon, compaired to gasoline - produces about 33% LESS BTU's so you will burn about 33% more ethanol than gasoline to go the same distance.
You know nothing about how internal combustion engines operate do you? Combustion is a clue Space Cadet.0 -
V35: Yep, the O-470 had a simple engine driven pump, where the suction was under positive pressure from the gravity head of overhead tanks. I never had problems either, but I never got to get into the bladders to find all the "prizes" you did.
The goop you found was varnish/sludge from decomposing fuel - we really should drain our tanks and run the carb dry to store our planes. I have never heard of anyone who did this at my little airport. Gasoline decomposes starting at about three months, and really gets nasty after about 6 months. The varnish plates out on finished surfaces, and the sludge just gathers at low points, or areas that are low flow.
We just should fly more! As long as we nearly empty our tanks at least once every couple of months, we will greatly reduce the sludge and varnish problems. "Yep, Honey, I've gotta fly to Harris Ranch/Vegas/Wyoming to keep the fuel fresh...sorry." <Big Grin>0 -
Ethanol is used in auto gas.(period) not methanol witch is used in race cars. Menthanol burns very hot and will burn up a engine real quick. But it produces better combustion/BTUs. Race cars have their engines rebuilt after every race or are carefuly monitered. (E-85 is 15% gas and 85% Ethanol.
Todays fuel is 10% ethanol and 90% gas. Has been for 20+ years, only some states require the pump to say so and some states don't.
Alot of you guys are funny the way you take rummors and expand them. You same people can now take pop shots me, I can use the laughs.[;)][:D][:D][:I]0
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