More likely you have a goofy fuel gauge sender or a plugged tank screen -- as the fuel level goes down, the portion of the screen it can go through decreases, and if the bottom half or so is filthy, no fuel comes through.

Get the strainer in the tank cleaned. Meanwhile, consider the quarter tank mark empty. Don't run it completely out of fuel, takes forever to get it primed again!

Oh, and since this is a wagon, look for a dent in the fuel tank -- placed correctly, it will prevent the float from falling past the 1/4 tank mark......!

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!