MC> superior to the synthetics.  Castor falls short because it attracts
 MC> water and leads to rust. 
 
Hi, Mark.  Castor oil is hydrophobic, it is the methanol that strongly
absorbs water which leads to rust.  This is why fuel cans and jugs should
be TIGHTLY capped with a gasket under the lid.
 MC> The problems start in deciding how much better the synthetis is. 
 MC> There are very few castor/synthetic blends that have 20% oil in them. 
 MC> The oil content varies from 10% to 18%+. 
 MC> I never run straight synthetics.  Also all synthetics are not
 MC> equal.  I am sure that there are different grades with prices to
 
I have never used fuel with all-synthetic oil so I can't compare (I'm not
sure I would know how, unless I lost an engine).  With the present prices
on good engines, I don't want to experiment - so - I'll stay with what 
works with us.  BTW, you're doing a good job as echo moderator - thanks.
TTYL - Roger
... Catch the Blue Wave!
--- Blue Wave/RA v2.12 [NR]
---------------