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(( Quote )) I know that the tailgate up uses more gas, just look at the NASAR trucks they have a fin on the back that provides downforce and at the same time it makes a bigger hole in the air causing them to go slower [/B][/QUOTE]
What in the world does that have to do with tailgate mileage. Nascar trucks use coverded beds. With tailgate up the wind is no longer traveling along the box body(inside).
Originally posted by lexluthr69 Simple question: If leaving the tailgate down is better for mileage and better airflow out the back, why would a truck, such as the Lightning, who's sole purpose is to go fast and not worry about anything falling out of the back, have a tailgate? If it were so detrimental to the airflow of the truck, why wouldn't the Ford engineers have decided that it is better to just put a net or other similar device in?
Well there is a couple reasons that Ford left the tailgate on the Lightnings, one simple reason is you couldn't sell a new vehicle like that if it didn't have a tailgate. Running without a tailgate (and not using a net, ratchet strap, or something similar to keep your bed from moving) will warp your bed. That and the tailgate is just part of the Ford design. A truck (whether it's a Lightning or not) just wouldn't be a truck if it didn't have a tailgate. Besides, Ford doesn't always figure out what makes their vehicles run the best, it's always some hick (like me) out in the middle of nowhere that does.