I just used a fuel pump to add 3.8 liters of diesel to my car (£5) from a local Jet fuel station. However my car's analogue fuel guage hasn't moved in the slightest. I have added similar amounts before (from different stations) and seen a visible change in the gauge, but nothing this time.
This has happened once before at the same station but with a different car and according to local social media communities it has happened to others with small amounts too.
I confronted the clerk the last time this happened and again today and both times have been told that the pumps are fine and that the only place the fuel could have gone is in my tank.
Is it possible the pumps don't pump anything or less than they should for the first few liters? Is there a minimum for my car to show a reading?
Car details: 2009 Peugoet 308, 1.6 HDI (diesel) Fuel tank: 55 liters