Yes, the big nozzle barely fits into my tank as well. Last night I was able to get one of the big truck nozzles to stay put. It must be that enough fillups with big nozzles has succeeded in bending whatever that sheetmetal piece is inside my car's filler neck. I usually hold the nozzle in my tank and gently squeeze the flow open. What I'm really trying to figure out now is how much more my tank will hold with my filler neck facing downhill vs. facing uphill. I got 29.7 mpg last night, if my gallons are correct, but I was expecting more like 27 mpg. Not that I'm complaining; diesel is down to $1.119 in NJ

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Bob Roe
Lehigh Valley PA USA
1973 Olds 88, 1972 MB 280SE, 1978 Datsun 280Z, 1971 Ford T-Bird, 1972 Olds 88, 1983 Nissan Sentra, 1985 Sentra, 1973 230.6, 1990 Acura Integra, 1991 Volvo 940GLE wagon, 1983 300SD, 1984 300SD, 1995 Subaru Legacy L wagon, 2002 Mountaineer, 1991 300TE wagon, 2008 Murano, 2007 R320CDI 4Matic 52K, some Hyundai, 2008 BMW 535xi wagon, all gone... currently
2007 Honda Odyssey Touring, 2014 E350 4matic