Use a 100 ml graduated cylinder if you can! Retired chem teacher sorry! Eric
----- Original Message ----- From: Detrick Merz Date: Wednesday, June 29, 2011 8:16 pm Subject: Re: [vintagvw] Ethanol in gasoline To: Air-Cooled Volkswagen Discussion List > Take a 100ml test tube. Put 10ml of water in test tube. Add 50ml E10 > gasoline. Shake well, then let sit. The ethanol will absorb some of > the water, and settle out of the gas. You'll be able to tell the > ethanol percentage based on the stratification (your 10ml of water > will suddenly look like more than 10ml). Decant the gas off the top, > and (in theory) you have ethanol free gas. > > The big question then becomes: what is the octane rating of that > ethanol-free gas?! > > Once the octane rating is known, and providing is it sufficiently > high, "producing" ethanol-free gas becomes somewhat simplistic > (although, perhaps, annoying in large volumes). You end up with > water-saturated ethanol as a byproduct. No idea what to do with it, > but surely that can be figured out. > > On Wed, Jun 29, 2011 at 7:51 PM, Mike wrote: > > Ethanol content in our gas eliminates the need for "DryGas". > Not a bad > > thing entirely. > > Hygroscopic means that it attracts/absorbs water. > > If there's water in your gas tank (whether from the gas-pumps > or from highly > > humid air condensing in the airspace above a less-than-full tank). > > It allows the contaminant to burn in the engine along with the > gas. This > > reduces octane as well as the combustion temps as the water > cools the > > mixture. > > We're all E10 here in New England; "gasohol" from the 70's, right? > > They water down our gas and then charge us more for the > privilege! What a > > deal (for them)! > > So, now it's just a natural course of events to make the move > to 15%, and > > higher! > > Shorter engine life means we buy cars more often to replace > the worn-out, > > too-expensive-to-repair ones we own now. > > Yes, this stuff eats fuel lines. My 4-cycle weedwacker's > clear fuel lines > > crumbled to shreds over the winter, that never happened before! > > I replaced it with thick-wall clear fuel line for my radio- > controlled model > > airplane; it's formulated for some pretty strong stuff. > > But I have NO idea what to do for VW fuel lines..... > > > > Mike B. > > > > -----Original Message----- > > From: Bert Knupp > > Sent: Wednesday, June 29, 2011 6:48 PM > > To: 'Air-Cooled Volkswagen Discussion List' > > Subject: [vintagvw] Ethanol in gasoline > > > > Volks, > > > > The European classic-car boards are lighting up in panic > because of a > > proposal in the European Community to mandate E10 fuel -- > requiring 10% > > ethyl alcohol (ethanol) in all retail motor fuels. You'd > think war had been > > declared on old-timers and classics: Doom and destruction is > being forecast > > for all the usual reasons, mostly revolving around the hygroscopic > > characteristics of ethanol. Of course, here in the USA, we've > had E15 at > > our pumps for a long time. And lead-free gasolines even longer. > > > > The general question: What adaptations, if any, are required > when ethanol > > gets added routinely to motor fuels? Will our fuel tanks > really rust away? > > Will our butyl rubber fuel lines really turn to silly putty? > Are we really > > seeing any negative effects of our E15 gasoline on longevity, > performance,> or economy? How about the absence of tetraethyl > lead? In the USA, it was > > the agriculture lobby that bought enough votes to require > ethanol use. In > > Europe, distaste for dependency on Khadafy and his ilk adds to > the push > > (though we've had our share of jingoism, too). What's the > Real Story for > > those of us who drive antique cars with antique engines? Are > there any > > additives we ought to consider? Changes in hoses and tubes? Fuel > > treatments to spare our gas tanks? > > > > Bert Knupp in Music City USA > > > > |__n__ > > (_____)º > > (Ô\_|_/Ô) > > ü ° ° ü > > Polizeikäfer '70 > > > > > > _______________________________________________ > > vintagvw site list > > [email protected] > > http://lists.sjsu.edu/mailman/listinfo/vintagvw > > > > _______________________________________________ > > vintagvw site list > > [email protected] > > http://lists.sjsu.edu/mailman/listinfo/vintagvw > > > > _______________________________________________ > vintagvw site list > [email protected] > http://lists.sjsu.edu/mailman/listinfo/vintagvw > _______________________________________________ vintagvw site list [email protected] http://lists.sjsu.edu/mailman/listinfo/vintagvw
