[AT] unleaded gas

[charlie hill]

Both reasons Chris.  In fact when the lead was removed from gasoline valves 
had to be redesigned to prevent burning.  It is still an issue with antique 
tractors and cars.

Charlie
----- Original Message ----- 
From: "Chris Britton" <c.britton at worldnet.att.net>
To: <at at lists.antique-tractor.com>
Sent: Wednesday, August 02, 2006 8:51 PM
Subject: [AT] unleaded gas


>I always thought tetra ethyl lead was added for octane enhancement / 
>preventing spark knock ( pre-detonation.. not valve lube.. etc???
>
> Soundguy
>
>>Of course, when they took the lead out of gasoline, all the old
>> car/truck/tractor/boat engines would have their valves burn up the next
>> day. That didn't happen either. But people still buy "lead substitute"
>> to add to their gas.
>>
>> Mike
>
>
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