question about oil cooler connections on MK1 superlight. 
   A question for anyone who may know this.
 On my superlight's oil cooler there is a what appears to be a isolating valve connected to the coooler.
 It only moves a quater of a turn, either on of off, like the plumbing valves with the blue or red handles.
 How do I know which is way it should be, there is another smaller oil line connected to the out going side of the valve, which goes to the bottom of the carbs , linking both carbs and then returning to the cooler.
 What is this for, it's not shown in the manual.
 I'm a bit concerned that this valve could easly get moved to a closed postion, so I need to be sure what postion it should be in normal rididng mode,would it have been part of this mod for the carbs etc.
 any help guys.
 
 Cheers
 R