1991 Ford f 350 7.3 liter diesel fuel mileage Source Source Source Source Source Source Source Source Source Source Read Also: 1991 7.3 Liter ford diesel engine 1991 Ford diesel fuel mileage Ford f250 7.3 liter diesel fuel mileage 1991 7.3 Liter ford diesel Ford 6.0 liter diesel fuel mileage Picture of 1991 7.3 liter ford diesel