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<p>Guess I'll add another two cents.. as many will recall, a valve
job was the bread and butter of repair shops (mine included) since
the advent of unleaded fuel I have not seen a single valve job and
valve seat recession</p>
<p>only on a race engine. New chemicals have been added to replace
the octane boosting and lubricating attributes of lead. Most of
what is out there as advice is a total myth or marketing BS.. My
opinion .</p>
<p>DaveP<br>
</p>
<br>
<div class="moz-cite-prefix">On 10/1/2018 11:15 AM, Reihing, Randall
S. wrote:<br>
</div>
<blockquote type="cite"
cite="mid:5DF59F06A5E05E47A21C0E72057265D901BFAA4FD2@msgdb11.utad.utoledo.edu">
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<div style="direction: ltr;font-family: Tahoma;color:
#000000;font-size: 10pt;">Checking the web I found that the Red
Line lead substitute fuel additive is available through Amazon
in 12 ounce bottles to treat 25 gallons for close to $17.00,
plus shipping, and adds about $.70 per gallon to the cost of
whatever octane is selected.
<div><br>
</div>
<div>An alternative might be 100 Low Lead, or 100LL, aviation
fuel available at almost any airport and add it to the auto
fuel. Shell Oil Co.'s web site lists 100LL as having
0.56g/liter of lead per gallon, <a
href="https://www.shell.com/business-customers/aviation/aviation-fuel/avgas.html"
target="_blank" moz-do-not-send="true">https://www.shell.com/business-customers/aviation/aviation-fuel/avgas.html</a>, <span
style="font-size: 10pt;"> which is about 560 ppm, or parts
per million per gallon. I don't know if one gallon of 100LL
could be diluted in today's auto fuel and be enough lead to
for a TR3's valve seats. </span></div>
<div><br>
</div>
<div>An alternative might be to use a few gallons of 100LL
($4.75/gallon in Ohio) from time-to-time and maybe (hopefully)
enough lead residue would build up to protect the valve seats.
Click on this link to see 100LL av gas cost per state.<font
color="#0000ff"> </font><a
href="http://www.airnav.com/fuel/greatdeals/long?type=1"
target="_blank" style="font-size: 10pt;"
moz-do-not-send="true">http://www.airnav.com/fuel/greatdeals/long?type=1</a></div>
<div><br>
</div>
<div>Maybe one of the lists math wizards could research how much
lead was in auto fuel before it was phased out and determine
if 100LL can help.</div>
<div><br>
</div>
<div>Sincerely,</div>
<div>Randall Reihing</div>
<div>1959 TR3A</div>
<div><br>
</div>
</div>
<br>
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