[Tomko]

Anyone come across this before?

DEF Magnevator II - FiveStarDEF.com

 

[Tomko]

Here is the OEM part. But I'm not convinced that it's better in a hand-help application like the aftermarket solution above.

Dover OPW Fueling Components MFPD Mis Filling Prevention Device | eBay

 

[diesel]

Interesting. I had no idea this was even an issue. I never tried filling at a truck stop though.