If you own an older car, be advised. The high ethanol-content “gas” in use today can cause problems when fed to engines not made to use it. Not so much burn it – ethanol fuel has some advantages, including octane enhancement.
The problems arise when alcohol-laced fuel comes into contact with – and eats away at – rubber and plastic parts, including gaskets, rubber diaphragms, seals, o-rings and so on. The alcohol in the fuel also accelerates the rusting out of steel parts such as fuel lines and (in older cars) steel fuel tanks (most modern cars have composite plastic tanks).
Finally, ethanol-laced “gas” doesn’t keep as well – which isn’t a problem for regularly used cars but can most definitely become a problem for occasional-use older/antique cars (and motorcycles) that might not burn through a tank of fuel for several months.
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