Castrol "R"

["Alan" <alan@roverworks.com>]

Castrol "R" does not seem to be available from Castrol here in North
America (Canada). I require "R" to lubricate a Cozette blower on a
pre-war engine. Does anyone have insight into the use of an alternative
lubricant? While I am asking, if any information exists on Cozette
carburetors as used on supercharged Austin Sevens I would benefit from
it.
Alan Simpson
http://roverworks.com/