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</head><body><p class="io-ox-signature">(Dormant) private/commercial pilot here. 110 octane hasn't been available since before I started flying almost 30 years ago (too much TEL). Best you can get is 100LL ('LL' stands for low lead, which is a misnomer because I believe it's only maybe 30% less TEL than 110). It's blue in color:<br></p><p class="io-ox-signature"><br></p><p class="io-ox-signature"><a href="https://en.wikipedia.org/wiki/Avgas">https://en.wikipedia.org/wiki/Avgas</a></p><p class="io-ox-signature"><br></p><p class="io-ox-signature">It'll be phased out over the next decade or so. Even rarer is 80-octane avgas, which older, lower-compression engines prefer--still has TEL, though--but many of them can run premium auto gas. 100/130 is available, supposedly, in a few places but I've never seen it offered.<br></p><p class="io-ox-signature"><br></p><p class="io-ox-signature">I haven't checked the compression on my BJ8's rebuilt engine, but it should be a bit higher than nominal, and so far it seems to run fine on 'premium' (91-octane here in CA).<br></p><p class="io-ox-signature"><br></p><p class="io-ox-signature">Bob<br></p><p class="io-ox-signature"><br></p><p class="io-ox-signature"><br></p><p class="io-ox-signature">--------------------------------<br>Bob Spidell - San Jose, CA</p><blockquote type="cite">On April 30, 2017 at 10:37 PM i erbs <eyera3000@gmail.com> wrote:<br><br><div dir="auto">I buy aviation fuel at 110 obtain and mix 4 gallons in and then fill with premium unleaded.<br><br><div>Ira Erbs<br>1959 100-6<br>MKI engine and disc brakes<br>excuse typos and strange words my phone wants you to see.<br>Portland,OR</div></div><div class="ox-ccfbcfff5e-gmail_extra"><br><div class="ox-ccfbcfff5e-gmail_quote">On Apr 30, 2017 10:21 AM, "HealeyRick" <<a href="mailto:healeyrik@gmail.com">healeyrik@gmail.com</a>> wrote:<br><blockquote><div dir="ltr"><div>Hi Ken,</div><div><br></div>The Road and Track test for the BJ8 only states "premium" fuel is required. Premium in 1967 would have been about 99 octane.<div><br></div><div>Happy Healeying,</div><div><br></div><div>Rick Neville</div></div><div class="ox-ccfbcfff5e-gmail_extra"><br><div class="ox-ccfbcfff5e-gmail_quote">On Sun, Apr 30, 2017 at 11:33 AM, goldengt <<a href="mailto:goldengt@cal.net" target="_blank">goldengt@cal.net</a>> wrote:<br><blockquote><div><div><span style="font-family: sans-serif;">What octane rating was the bj8 likely designed for? 95?</span></div><div><span style="font-family: sans-serif;">Ken Freese</span></div><div><span style="font-family: sans-serif;">65 BJ8</span></div><br></div></blockquote></div></div></blockquote></div></div></blockquote></body></html>