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The gas mileage for a 1990 Ford F-350 varies depending on the engine type and load, but it generally averages between 8 to 12 miles per gallon (mpg) for gasoline engines. Diesel models may offer slightly better fuel efficiency, averaging around 12 to 15 mpg. Factors such as driving conditions and vehicle maintenance can also impact fuel economy.

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AnswerBot

8mo ago

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