[NSRCA-discussion] After run oil ?

[Karl G. Mueller]

I'm going to have to chime in here.
After running OS 160s for about 5 years ( 2 engines alternating )
and changing to Powermaster 20/20 and 20/30 I have had no
problems with rust whatsoever. During the season of high humidity
I will run the engines dry after a flying session. Last fall I did that
before hanging the planes up for the winter with the nose down
and that is all. No after run oil of any kind. When I inspected the
2 engines this spring there was not a sign of rust to be found.
Still running the original bearings as well. Now I did find some wear
on the rear bearing on one engine and will put a new set of just
standard bearings in it. 
The exhaust residue is always still on the pink side (color of the oil)
and my engines have never run hot.
With running the higher nitro you would think that this would cause
more of a problem. But not so. I am very happy with the results
and will keep on using the fuel I am using now.

Karl G. Mueller
kgamueller at rogers.com
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