I agree with you both! For automotive use (and general marine use), the
factory method is fine. Engine durability exceeds expectations. I also

agree

that the deposits caused by the use of conventional motor oils are
detrimental to the ultimate potential durability and performance of the
engine. Where the extra attention and complexity required by a separate
metering supply is warranted, it should be used. Perhaps aviation is

such an

application. IMHO, general automotive and marine uses do not require 2

stroke

oils, although an improvement in internal cleanliness could likely be

gained.

My .02.

Jon Lauter
Rotary Power Marine Corporation

Archie wrote:

Did we ever reach a conclusion on what the "ideal" oil is?
I recall Paul performing some preliminary deposit tests.
Results on turbine oil? (am curious because I have some).
Archie

The turbine oil held up real well during the 500 degree F one hour bake test
but I saw no advantage over two cycle oil and there is an unknown burning
behavior risk with turbine oil. I don't know what happens when it finally
burns. 

BTW Leon, the rotor apex seal slots run 500 degrees at full power.
Also I might add I have seen dozens of torn down engines at Atkins,
MazdaTrix and Hayes Rotary Engineering and ALL the rotors are carbon'ed
up very badly indeed. Tracy ran his engine for about 600 hours mixing
MM and two cycle oil with the fuel and you could eat offthe rotors
almost. I saw it with my own eyes. IMHO two cycle oil, and teflon
encapsulated silicone O rings,  are a low cost, significant increment in 
the already excellent durability of the rotary engine at high continuous
power such as found in aircraft engine use. 
 
Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org