<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=windows-1252">
<META content="MSHTML 6.00.2800.1555" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2>I'm going to have to chime in here.</FONT></DIV>
<DIV><FONT size=2>After running OS 160s for about 5 years ( 2 engines
alternating )</FONT></DIV>
<DIV><FONT size=2>and changing to Powermaster 20/20 and 20/30 I have had
no</FONT></DIV>
<DIV><FONT size=2>problems with rust whatsoever. During the season of high
humidity</FONT></DIV>
<DIV><FONT size=2>I will run the engines dry after a flying session. Last fall I
did that</FONT></DIV>
<DIV><FONT size=2>before hanging the planes up for the winter with the nose
down</FONT></DIV>
<DIV><FONT size=2>and that is all. No after run oil of any kind. When I
inspected the</FONT></DIV>
<DIV><FONT size=2>2 engines this spring there was not a sign of rust to be
found.</FONT></DIV>
<DIV><FONT size=2>Still running the original bearings as well. Now I did find
some wear</FONT></DIV>
<DIV><FONT size=2>on the rear bearing on one engine and will put a new set of
just</FONT></DIV>
<DIV><FONT size=2>standard bearings in it. </FONT></DIV>
<DIV><FONT size=2>The exhaust residue is</FONT> <FONT size=2>always still
on the pink side (color of the oil)</FONT></DIV>
<DIV><FONT size=2>and my engines have never run hot.</FONT></DIV>
<DIV><FONT size=2>With running the higher nitro you would think that this would
cause</FONT></DIV>
<DIV><FONT size=2>more of a problem. But not so. I am very happy with the
results</FONT></DIV>
<DIV><FONT size=2>and will keep on using the fuel I am using now.</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>Karl G. Mueller<BR><A
href="mailto:kgamueller@rogers.com">kgamueller@rogers.com</A><BR></FONT></DIV></BODY></HTML>