Hey guys I need to replace my diff cover cuz it's rusting through and starting to leak. I know it has 12 bolts but the store is asking me what size the rear end is. How can icfound this out? It's an 04 5.4 4x4 super cab. And on a side note. I have sum lights out in my master window switch. Can u fix this or need to replace the whole switch? Thanks guys!!

 

And also what do I need for fluid to fill it back up? My last truck called for synthetic. What weight and type do I need thanks!

 

All 5.4 trucks have the larger 9.75 rearend. And the rear takes 3qts to fill

 

Rusted through? Feel free to go through the carwash a little bit more.

 

Change your gears out while u got the cover off.

 

Check out purple cranium

 

^x2 on the gears.

 

Can't wait to do mine... Should be a monster with gears and a programmer

 

powerranger262 I just bought the truck about 2 months ago and I live in Maine where there is a lot of salt on the roads. So your comment wasn't much help! But they offer a larger ring size of 10.2? and didn't know which size it is. Is there a way to find out from the VIN? And what weight are you guys talking about with the purple cranium

 

75w-140 is what is recommended in my 97. Dont think they changed it since then. Ford seems to prefer the heavier synthetic.