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Unleaded Fuel

Unleaded fuel is a type of gasoline that does not contain lead as an additive. Lead was traditionally added to gasoline to improve its octane rating, which is a measure of its ability to resist “knocking” or detonation in an engine. However, lead is a toxic metal that can cause serious health and environmental problems, so many countries have phased out the use of leaded gasoline in favor of unleaded options.

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