How can I make my 85 Jeep Cherokee more fuel efficient?

I'd love to convert it to biodiesel but I guess that's out of the question. I can't afford a new car- so what can I do?

Answer:
Use the best spark plugs you can get. Replace the air filter. Air up the tires like they should be. Give it some fuel cleaner. And have it given a tune up.

Tow it with a bicycle.

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