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Re: Best fuel efficiency
OK, I'll be the first to say it - the only way you're going to get 25-30 MPG out of a 69 GMC truck is if you coast it downhill in neutral. It's a brick, and it just doesn't move through the air very efficiently. Modern trucks struggle to get there with computer controlled engines and transmissions and bodies that are tested in wind tunnels. Just my humble opinion.
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I have sworn upon the altar of God, eternal hostility against every form of tyranny over the mind of man. - Thomas Jefferson
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