<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div><table border="0" cellspacing="0" cellpadding="0" bgcolor="#DDDDDD" style="width: 1320px; background-image: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(221, 221, 221); font-family: Calibri; font-size: medium; "><tbody><tr><td><table border="0" cellspacing="0" cellpadding="0" align="center" class="subscribe-body" style="width: 1300px; padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left: 10px; "><tbody><tr><td><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><table border="0" cellspacing="0" cellpadding="0" bgcolor="#ffffff" class="subscribe-wrapper" style="width: 600px; background-color: rgb(255, 255, 255); text-align: left; max-width: 1024px; min-width: 320px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; "><tbody><tr><td><table border="0" cellspacing="0" cellpadding="20" bgcolor="#ffffff" style="width: 600px; "><tbody><tr><td><table border="0" cellspacing="0" cellpadding="0" style="width: 560px; "><tbody><tr><td valign="top" class="the-post"><div class="post-content" style="direction: ltr; margin-top: 1em; max-width: 560px; "><p style="direction: ltr; font-size: 14px; line-height: 1.4em; color: rgb(68, 68, 68); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; ">A more critical liquid than fuel is oil. The engine must be plumbed to Cosworth specs…its data sheet DA0626 for ‘DFV250’ and the like. Its critical the engine never sucks air, at high revs bearing failure will result. At 10000rpm the engine is rotating at 166 times plus per second.</p><p style="direction: ltr; font-size: 14px; line-height: 1.4em; color: rgb(68, 68, 68); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; ">Peter; ‘I use Kendall 20/50 mineral oil, which has a high zinc content which is great for the cams and followers’. The Cosworth oil filter (Part #PP0404) needs to be changed every 300 miles, the oil level needs to be checked religiously as the engine uses as much as 4 quarts every 100 miles.</p><p style="direction: ltr; font-size: 14px; line-height: 1.4em; color: rgb(68, 68, 68); font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; margin-top: 0px; margin-right: 0px; margin-bottom: 1em; margin-left: 0px; ">Oil temperature should be 90-100 degrees measured at the inlet to the pressure pump. 7000rpm should not be exceeded before the oil is at least 50 degrees centigrade.</p></div></td></tr></tbody></table></td></tr></tbody></table></td></tr></tbody></table><br></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><br></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font class="Apple-style-span" face="Helvetica Neue">I have included the above comments on oil as used in an historic F.1 Cosworth engine.</font></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font class="Apple-style-span" face="Helvetica Neue"><br></font></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font class="Apple-style-span" face="Helvetica Neue">It seems flat tappets and zinc must go together.</font></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font class="Apple-style-span" face="Helvetica Neue"><br></font></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font class="Apple-style-span" face="Helvetica Neue">For those interested see ; primotipo.com and search on say Cosworth, Repco-Brabham for hours of fun</font></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font class="Apple-style-span" face="Helvetica Neue"><br></font></div><div style="direction: ltr; max-width: 600px; margin-top: 0px; margin-right: auto; margin-bottom: 0px; margin-left: auto; overflow-x: hidden; overflow-y: hidden; "><font class="Apple-style-span" face="Helvetica Neue">Joe</font></div></td></tr></tbody></table></td></tr></tbody></table></div></body></html>