Fuel leak in the rear
My 110 has a chronic diesel leak at rear of the truck. Initially I swapped fuel filler neck and it still persisted so I dropped in a new tank, but the leak is still happening.
Obviously there is something else going on. The leak is usually right by the mud flap and seems to worst when its got a full tank and parked nose down. There is also some diesel puddled around the cap too.
I'm thinking it must have to do with the breather, but the breather looks like it goes from the tank to the filler neck. The fuel cap was replaced with a genuine one.