11 Seems low for a regular cab with a 305. I'm sure you can bring that up. How does the plugs and air filter look? I'd throw a bottle of Chevron Techron fuel treatment into the tank. The 4x4 hurts a little, putting synthetic fluids in the 2 diffs and transfer case during your next maintenance interval might pick up 1mpg which isnt too shabby when you are sitting on 11.
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