"Do a 'walk around' the van and check things visually
while filling up."

I'd forgotten that I automatically/unconsciously do the
"look-under-the-van-for-wet-spots" before pulling out, and I seem to
look for them on the ground as I'm driving onto the stop-spot where
I'll fuel up or park for my bio-break before going inside.

bob
'87 Syncro Westy