Oils ??? Morris or Lucas

Hi all, any one on here had experience with either Morris oil or Lucas oil with their Commando's?
Am trying to decide which to use in Bike #2 running Avgas, 10 : 1 CR and JS Motorsport goodies
Will only be used for track use, not road going miles.
Thanks and regards Mike

Unless he has changed brands Dave Degens of Dresda Motorcycles used to race his classic Triumphs on Morris oils,
http://www.dresda.co.uk/

I use Lucas post rebuild for everyday use. I used to use penrite but that proved to be a big mistake that nearly took out my primary side crankcase. Penrite didn't seem to handle the heat well at all.
Lucas seems quite hard to get in Brisbane.