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Old 06-27-2009, 04:23 PM
glc glc is offline
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Join Date: Dec 2006
Location: Joplin MO
Vehicle: 2003 Ford F150
Posts: 9,211
To do it right, suck the fluid out, then remove the cover and clean it out. Contaminants can be a big deal, mine was really nasty in there after 100k. You can get a gasket for the cover instead of dealing with RTV - check local parts stores. Autozone had a Fel-Pro for my 8.8, it was 5 bucks.

Rear requires 75W140 full synthetic with friction modifier. Front takes standard 80W90. My LS was starting to chatter a bit, the drain, clean, and fill took care of that completely.
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2003 F150XL 4.2 short cab/bed 4x2 5 speed manual 3.55 LS
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