[Tigers] Best Dino Oil for 260/289/302?

[Gyroplanes at aol.com]

I have no interest in Castrol, but in my lifetime I have met several guys  
that have worked in oil company labs, all fo them said Castrol was better 
than  any oil they tested including their own. None of them worked for Castrol.
Just an FYI.
 
Tom  Milton
Lansing, IL.
1964 Tiger project
B382000257

 
 
In a message dated 7/8/2010 8:15:12 P.M. Central Daylight Time,  
mcdangerous at verizon.net writes:

I am  trying to figure out the best choice of dino oil for the 289  engine.
Because the engine is freshly rebuilt and needs to be run in, I  don't want
to use synthetic (too slippery).  What grade oil are you  all using, 20W50?