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We did have the tech in the 1960s to make gas tanks that were sealed against the rain, actually. While yes ethanol is hygroscopic, 10% ethanol won't cause issu
by sudosysgen 5y ago
We did have the tech in the 1960s to make gas tanks that were sealed against the rain, actually.
While yes ethanol is hygroscopic, 10% ethanol won't cause issues even in old vehicles (see people with old motorcycles) unless you keep it in for a long time without use.
- lazide 5y agoAgainst the rain is not sufficient - it has to be sealed against atmospheric moisture at higher concentrations. 10% ethanol isn’t terrible at this - but the discussion was running on ethanol vs gas right? If running ‘pure’ ethanol, it’s still really hard to not have engines die or fuel handling not contaminate it. It’s not an easy thing to keep pure enough, and is even a bit corrosive compared to gasoline.
- sudosysgen 5y agoNo, the discussion isn't about ethanol vs gas. It's about adding some ethanol to gas in order to reduce knocking. That means 10-15% ethanol. I agree that 100% ethanol would require hermetic seals, but this is about ethanol as an additive. GM were considering using ethanol as an additive, not 100% ethanol fuel. That would require massively changing up the engine anyways and wouldn't be compatible with straight gas.