Why is the use of unleaded petrol recommended for motor vehicles equipped with catalytic convectors? [AI 2013, 2010]
Or
Why is it desirable to use unleaded petrol in vehicles fitted with catalytic converters? [AI 2012, Foreign 2010]
Or
Why should motor vehicles equipped with catalytic converter use unleaded petrol? [Delhi 2011C]
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It is desirable to use unleaded petrol in vehicles fitted with catalytic converters because lead will quickly deposit onto the converter, poisoning the catalyst and rendering it worthless in a very short space of time.
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