RE: Aviation Oil

["Vaudry, Howard (Calgary)" <Howard_Vaudry@xxxxxxxxxxxx>]

Much appreciate the scientific response !

Cheers
H
03R1150RT

- -----Original Message-----
From: owner-oilheads@xxxxxxxxx [mailto:owner-oilheads@xxxxxxxxx] On
Behalf Of Joe Kiefer
Sent: May 20, 2005 7:03 PM
To: oilheads@xxxxxxxxx
Subject: RE:Aviation Oil


This is always a fun question.  The base stock for oil whether mineral
(dino
juice) or synthetic is the same for aviation and automotive.  The
additive packages are what make them difference.  Bearing loads, engine
RPM, percent of time at full power, etc. are some of the factors.
Although there's much more demand on an aircraft engine that doesn't
mean that the kind of additive package is has is better for automotive
applications.  For example, a much higher engine RPM can require a high
shear strength from the oil molecules.  The materials used in bearings,
valve guides and other engine component may not be compatible with
certain additives.  The chemists that formulate oil additives attempt to
optimize these oils for the intended application.  Having said that a
study was done that can be seen here
(http://www.nightrider.com/biketech/oiltest1.htm) on the differences
between automotive and motorcycle oil.  For me the bottom line is to use
a synthetic automotive oil.

JK
Houston, TX


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