And another one.
mjb.
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Date: Tue, 22 Jun 93 15:42:15 EDT
From: jesup@cbmvax.cbm.commodore.com (Randell Jesup)
Subject: Re: Octane, lead
>> o 88 octane leaded, or 92 unleaded -- which to use?
You can actually buy leaded? Lucky dog! I haven't seen leaded
around here in 3-4 years or so.
>Common net.wisdom says the 92 unleaded is better, at least for the higher
>compression engines. I use unleaded 92 in my GT6+ and TR250. According to
>several folks on the net, valve damage from unleaded fuel isn't a problem.
You might want to do a 50/50 mixture of 88 leaded and 92 unleaded
once in a while. The octane should still be plenty to avoid pinging unless
you've upped the compression, and some lead can't hurt. (Lead has a non-
linear affect on octane, so the result may still be ~92.)
If you drive >10K miles/year, you might end up having to deal with
head repairs on unleaded in some cars. It depends a lot on the car. Even
fairly small amounts of lead can help avoid recession, according to the
UK car magazines.
Randell Jesup, '70 TR6
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