https://www.fleet.ford.com/maintenan...les/GetYMM.asp
The official schedule says every 30k for NORMAL operation for a 2002 5.4 4wd. Interesting. To be safe, do a fluid exchange every 30k.
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2003 F150XL 4.2 short cab/bed 4x2 5 speed manual 3.55 LS
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