Quote:
Originally Posted by wdfifteen
Most newer cars don't.
They used to use lead, and then MTBE, to increase octane, but both of them were banned. Lead is poisonous and MTBE contaminated groundwater. So they turned to ethanol to raise the octane.
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For reference, I think they have been selling gas with ethanol since the 1920s so this is not a 'new' thing...(pre-dates moving away from lead and MTBE).
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Mike
1976 Euro 911
3.2 w/10.3 compression & SSIs
22/29 torsions, 22/22 adjustable sways, Carrera brakes
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