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Is the lead content of various gasoline stations differ from...

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Question by nesty
Submitted on 2/14/2004
Related FAQ: Gasoline FAQ - Part 4 of 4
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Is the lead content of various gasoline stations differ from each other even if they are of same class gasoline?

Answer by IDbuffalo
Submitted on 2/17/2004
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Lead never was a natural component of gasoline.  It was added as an upper cylinder lubricant until outlawed many years ago.  It was replaced with methyl tertiary butyl ether (MTBE) until that was banned because of environmental concerns.  

So to answer your question:  the lead content (zero) will be the same regardless of the station or grade of gasoline.  Practically all stations begin with what is called "base gasoline" and add their own proprietary additives based on the brand of gasoline.  Some stations add ethyl alcohol, but still use some detergent additives.


Answer by mas
Submitted on 3/11/2007
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The above answer is totally wrong.
The lead DOES exist in any type of gazoline because it exists in crude oil. Typical values for "standard" gazoline are ~10 mg/l varying from 5 to 15 easily. Leaded gazoline has more. 5 mg/l is the European target norm for unleaded gazoline. Corresponding norm in the US is 0.1 g/gallon if I remember correctly.
MTBE indeed used to be added (and probably still is added at least somewhere).


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