Two black tanks?
We have a 2012 Sprinter 311BHS. We figured out that we have two grey tanks and they are totally independent. Now we are curious about the black tanks? The control panel says we have two. There is only one valve for black outside, two for grey. Do we really have two tanks ? If so, do they fill up one after the other?
2005 Ford Excursion Diesel 4X4 with Roadmaster Active Suspension, F350 1 3/16" rear sway bar, Bilstein shocks & steering damper.
2012 Sprinter 311BHS