[TheColonel]

Got this little gem of info from Benno289:

Thought you might be able to circulate this solution to the capless dilemma (for the petrol mondeo owners out there.) I was another genius who believed in the DTE gauge, only to come unstuck in metro Melb in peak hour. RACV turned up and freaked out when I showed him the capless system BUT after some lateral thinking, he punched a hole in one of the plastic circular caps that cover his new car batteries - it fitted like a glove in the neck of the tank, the hose went in and away I went. Safe to say that cap is now an indispensable part of my car tool kit! Circular plastic bottle lids would also serve the same purpose - nothin' but high-tech solutions for me!