Actually, some fuel always leaks around the nozzle on a diesel. The rubber lines (use the MB stuff, I've never found anything else that works) return the leakage to the tank.

The overflow from the IP and fuel filter use the same return line, though, so if they leak, you will dump quite a bit of fuel even if the leakage from the nozzles is minimal.

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!