I still don't get it.
Can you pull the red stick up and out of the tank? If so, what does it look like? what do the two circular areas of differing sizes on the stick in the diagram represent?
"I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79
"I got 328 loaner and was impressed with performance. It feels much faster than my 135i." - MOCKBA