<span class="Apple-style-span" style="font-family: Geneva, Verdana, sans-serif; font-size: 15px; ">Is this the thread of doom or what?</span><!StartFragment><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">It now spans 6 years in these pages and probably much more than that if Dar counted in all the lead-up to it.<o></o></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US"><o></o></span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">For what its worth I agree with Dar on his method on extending the useful life, power and reliability of a tapered bore engine that uses a plated liner.<o></o></span><font class="Apple-style-span" face="Geneva, Verdana, sans-serif" size="4"><span class="Apple-style-span" style="font-size: 15px;">
</span></font></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">I have a good friend here in Oz that has been flying with MVVS engines since the 1970&rsquo;s, his background is in metallurgy and machining, and when I approached him about how to run in my MVVS his method almost mirrored Dar&rsquo;s.<o></o></span><font class="Apple-style-span" face="Geneva, Verdana, sans-serif" size="4"><span class="Apple-style-span" style="font-size: 15px;">
</span></font></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">To sum up, he has always used castor and the only time he varied to synthetic oil it washed the varnish off an old piston/liner assembly and rendered it unusable.<o></o></span><font class="Apple-style-span" face="Geneva, Verdana, sans-serif" size="4"><span class="Apple-style-span" style="font-size: 15px;">
</span></font></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">And I was advised to run in my unused MVVS at speed, using his words &ldquo;like you mean it,&rdquo; otherwise you risk shouldering off the top of the piston. The insurance protection here is the higher percentage of oil used and the type.<o></o></span><font class="Apple-style-span" face="Geneva, Verdana, sans-serif" size="4"><span class="Apple-style-span" style="font-size: 15px;">
</span></font></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">Castor will not flash off at the temperature that occur in our engines and is still the ultimate oil for our purposes.<o></o></span><font class="Apple-style-span" face="Geneva, Verdana, sans-serif" size="4"><span class="Apple-style-span" style="font-size: 15px;">
</span></font></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">The kicker is that my MVVS will be run in as a glow engine and then converted to diesel as soon as it has been, so I doubly want that &lsquo;pinch&rsquo; at TDC left in place.<o></o></span><font class="Apple-style-span" face="Geneva, Verdana, sans-serif" size="4"><span class="Apple-style-span" style="font-size: 15px;">
</span></font></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">Now I could choose any method that I wanted to in running it in and after much investigating I choose the one illustrated in post 1.<o></o></span><font class="Apple-style-span" face="Geneva, Verdana, sans-serif" size="4"><span class="Apple-style-span" style="font-size: 15px;">
</span></font></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:Geneva;mso-ansi-language:EN-US">Cheers.</span><span lang="EN-AU"><o></o></span></p><!EndFragment>