The term upper lube was invented by Oil Additives manufacturers back in the
40's / 50's for oils with extra qualities to lube the valve stems and upper
valve assemblies.
There were also several 'kits' available called top end lube kits that
either sprayed or dripped oil into valve covers. In addition there were kits
that increased oil flow to rocker arms and special Teflon Seals (Perfect
Circle) to improve upper engine lubrication.
You're right about the MMO. It was right in there claiming to be an upper
lube as well.
I think MMO survived this 60+ years because it's a great lubricant for all
kinds of things.
I know I've dumped lots of it into automatic oilers on impact gun lines.
lots more in oilers for automatic nailers and air powered drum pumps.
The fact that the term upper lube is being used makes me think you're on an
antiques car list.

Stan Wilder

----- Original Message -----
From: "Greenamyer, William L" <william.l.greenamyer@BOEING.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Monday, April 26, 2004 7:40 AM
Subject: Upper lube

Have any of you ever herd of the term upper lube?  On another list I am on,
they use the term to refer to lubrication being injected into the upper part
of the cylinder by putting 2-cycle oil in the gas.  Sounds a little like
putting MMO in the gas.  Thought I would bring up the question to see if
anyone had any thoughts on the subject.

William