MPG Test 7.3L Gas Superduty

F-350 SRW 7.3L 4.30

Fuel economy numbers for a 90 mile tow and around town site-seeing. You may see better mileage if you have the 3.55 or 3.73 gearing. The 4.30 bumps the tow rating to over 20k pounds, but hurts mileage numbers.

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