No you wouldn't expect an overflow if the pump shut off properly, but quite often when you pull the nozzle out there is some amount of fuel left in the hose, that spills out of the nozzle. Might be the source.

__________________
Mike Tangas
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72

'02 CLK320 Cabriolet - wifey's mid-life crisis

2012 VW Jetta Sportwagon TDI...at least its a diesel

Non illegitemae carborundum.