Re: 2004...F150 4x4 100thou tune up...help
Personally, I wouldn't worry about it. if you've had the truck maintained regularly at the dealer if a breaking plug does happen to you, they'll help with the cost. It depends mostly on your relationship with the dealer. If you're easy with removing plugs on your own, take your time with it (spray lube/anti seize & let it sit overnight) and you should be fine by morning to remove all the plugs. Just be sure to spray the area good with compressed air before you take out the plugs, so no crap falls into the engine. There are a few threads floating around on this site regarding this issue, it'd be wise to run a search and read.
'00 Durango R/T 360ci 290hp (modded); 138,500m
'06 Pontiac G6 GT 3.5L 220hp; 44,000m
'12 Chrysler 200 Limited 3.6L 283hp; 13,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!