<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">The difference is the oil. Heli oil is lower in viscosity than their standard synthetic oil and supposedly provides better cooling for helicopters. The oil is more expensive than standard oil and that's why heli fuel costs more. Morgan's Pro Pattern fuel is a 20% oil fuel (to meet YS warranty requirements) and the oil is a mixture of heli oil and standard oil.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>Ron</DIV><DIV><BR><DIV><DIV>On Sep 15, 2007, at 8:14 AM, Bob Pastorello wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"> <DIV><FONT face="Arial" size="2">Anyone tell me the differences between Cool Power 15%, and 15% Heli ? (Both say 17% oil, so I'm curious about other differences between them). Thanks for any info.</FONT></DIV> <DIV><FONT face="Arial" size="2"><BR>Bob Pastorello<BR><A href="http://www.rcaerobats.net">www.rcaerobats.net</A><BR><A href="mailto:rcaerobob@cox.net">rcaerobob@cox.net</A></FONT></DIV></BLOCKQUOTE><BR></DIV><BR></DIV></BODY></HTML>