* Driving conditions: City driving will yield significantly lower MPG than highway driving. Terrain (hills, mountains) also impacts fuel economy.
* Vehicle condition: Properly maintained engines and well-maintained drivetrain components will get better gas mileage. Things like tire pressure and even the weight being hauled dramatically influence fuel economy.
* Driving style: Aggressive acceleration and high speeds reduce fuel efficiency.
While a precise MPG figure is impossible to state without knowing the specific condition of the truck and driving habits, you can expect 8-12 MPG as a *rough estimate*. It's more likely to be on the lower end of that range in typical mixed driving conditions. You might see slightly higher MPG on the highway, and significantly lower MPG in city driving or while towing.
Keep in mind that this is a 35+ year-old truck, and fuel economy standards were much lower then than they are today.
