>| Recently someone posted a letter about adjusting the oil level to reduce
>| the oil temperature in an air cooled engine while they were making a
>| trip.

        I believe if you do a search on the archives for "windage", you
will find the end of discussion about the causes of higher running temp
from more than a half filled (or so) oil pan. Basicly, if I remember
correctly, after a certain level the spinning crankshaft will suck oil out
of the sump - causing more friction within the oil itself - I believe the
term for this is windage. For a fuller discussion and other effects
associated with it, see the archives...

dave