There are some fiberglass tanks that used cheap resins that are not resistant to ethanol, but not every glass tank used that resin. Fuel cells are compatible with ethanol, and most with methanol as well. Ethanol and methanol are two very different substances, and most people confuse the two or assume they are the same.
That is not ethanol residue, that is gasoline residue that ethanol cleaned out. Big difference. Gasoline leaves varnish and residue throughout the fuel system, ethanol merely cleans it out.
Wrong again. Wow, so many people who dont know much about fuels and certainly next to nothing about ethanol and chemisty.
Fuel lines produced since around 1983 have been ethanol compatible. It doesnt eat them, but gasoline eats rubber fuel line yet I dont hear any of you saying anything about it. When I was running gas, especially race gas, I was going through rubber line ever year to 18 months and there was zero ethanol in it. Since I have been running ethanol I havent had to replace anything in the fuel system for the last 8 years.
I produce ethanol at home, cattail vodka, and run it in my cars with stock fuel systems. If you want a clean fuel system, you dont run gasoline in it. If you want your engine to last forever you dont run gasoline in it either. Ethanol has been run in all my vehicles, including two 98 Pontiacs, a Gran Prix and a Formula, a 92 F150, a 79 Trans Am, 72 Formula 455 HO, and the 70 GTO.
I modify Qjets to run ethanol, have done extensive testing since 2007 with them and my 1970 GTO, and the results have been everything is lasting longer since it doesnt have gasoline run through it. It has a stock 1970 vintage tank, lines, and a 13:1 compression 455. The only addition to the fuel system is an electric pump which has been under it since 1996, and ran E10 through it until 2007 when it was switched to ethanol. The pump was added because the old 8.8:1scr 455 would suck the float bowls dry in 2nd gear with the stock pump.
This is what a 455 looks like after running ethanol for just under 200 hours. I pulled the heads to up the compression from 11.3:1 and this is the pic I took during the swap. This thing is a kick *** street engine.
Do you want to see some pics of the Qjets I have been running too?
Whatever this guys issue is, it isnt ethanol in his fuel. It looks more like a contaminant in his gas, and ethanol wont leave anything like what he is seeing. Sure you can claim its ethanol causing the problems, but I seriously doubt you have done any actual testing to see what the problem was. You just blame it on the scary corn gas because someone said it is bad, and never bothered to find out for yourself what the facts actually are.
Come on up to northern Michigan and we can go for a ride in the GTO now that the snow is gone. You can look in the carb, scope the fuel tank, and see what actually happens.