I had to drain and flush my 1993 4/4 tank.
I did some checks on the gauge to determine how empty E actually was and found just over a gallon left.
I found a diagram with tank dimensions and calculated a 55l capacity.
This left a 50l fill when showing empty ( near as dammit).
I haven't checked the Plus8 yet.
I have no problems filling up the Plus8 (2002 model). But then I do have an aftermarket LeMans cap. Big bugger!
I fill to first click for max.
