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by nate_meurer 1790 days ago
The EPA limits unleaded gasoline to 0.5 g/gal, but that doesn't mean your gasoline actually contains that much. The regs are meant to forgive some amount of cross-contamination from facilities that also handle avgas. I don't have any information on what values are typically encountered.

You're right, 0.5 g/gal is a lot of lead.