swivel ball housing? I have used PB Blaster and a 1/2" wrench won't break it lose. I have checked a few auto parts stores for a 1/2" square socket and found none.

 

You will probably need a 1/2" breaker bar, at least 2 feet long.
I take mine of with my 1/2" socket wrench and a 2 or 3" extension and a lot of grunting.
Make sure to check the magnetic drain plugs for things other then the usual magnetic mud, like little chunks.

 

Get an 1/2" drive 8pt socket at Sears.
An 18" breaker bar should be more than enough unless it was installed by an idiot.
When you put it back in, use a drive handle no more than 8" long, or hold your breaker bar 8" from the socket so you don't over tighten it.

 

i just used an adjustable wrench to take out the swivel ball fill plug. mine didnt put up too much of a fight though.

 

I just use a standard open end wrench, 1/2".
You can tap the wrench with a hammer to loosen it.
Make sure the threads are clean before you put the plug back in.

 

Brute force and ignorance will remove any bolt.

 

http://www.sears.com/shc/s/p_10153_1...=1/2%22+socket

 

I also used a large adjustable wrench to brake it loose.

 

Thanks, the 1/2" wrench wants to round the corners, so it's off to sears for the 8 pt socket.