No stations sell leaded gas, its eth or non eth... now some places sell E15 thats lower price, higher eth & usually 88 octane. But you get less mpg & power since ethanol has lower BTU's than non eth. I prefer the 91 non ethanol over 93 with ethanol.
Modern rubber fuel lines can handle ethanol fine but not the older stuff original on 70s & mid 80's cars... but thats so old it should be replaced with new anyways.
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