22-09-2020, 10:00 AM
The only brake line really close to the tank at that point is the one shown in your picture. It's quite vulnerable to corrosion. The bulk of them are set a bit further back, above the spare wheel n then run to the front along the passenger side. They don't appear quite so prone to prone to damage / corrosion. If you raise the car up, safely support it, remove the rear o/s wheel n have a good look below it will hopefully become obvious where it's coming from. I'm going to put my money on the sealing ring for the pump on the too of the tank. Diesel is a light oil.