I am hearing alot about the f150 spark plug problems, is this on the older 5.0 or is it primarily on the newer 5.4 motors. I recently purchased a 96 f150 4x4 with 5.0 injected, the truck has 118,000 on it and although it runs well it may be time for a tune up. If this is one of the problem motors, what can i do to minimize the chances of a broke plug? Any help is greatly appriciated...