Aircraft oils are ashless.Auto oils are not, Virg

Archie wrote:

True, and the reason is auto engines seal well.
Aircraft, using Model T technology do not.
I have three ac engines with custom rings, grooves and guides,
running on auto oil with no problems thus far.
(highest time 413hrs, 1 qt /43hrs)

Simple: No ash generated= No high $ ashless dispersant oil needed.
This is not rocket science, just practical common sense.
Would you buy a new car if told it will consume 1 qt/8hrs?
Would you buy a new car if told it will run hot with mineral
oil until break-in, and then change to regular?
C'mon everyone, let's get out of the dark ages.
In a few months, I may have a conversion kit (cheap) for
experimentals that any decent machine shop can employ.
Starting with O-320 & O-360 Lycs.
Nuff said!
Archie

is a lot differnt than 8 hours at 30 HP or 480 mile
 
The AirCraft Rotary Engine NewsLetter.              Powered by Linux.
ACRE NL web site.
http://home.earthlink.net/~rotaryeng/            http://www.linux.org