i got this stuff called pro long spl 100 .. its really good spray for this kind stuff.. you spray it a little you might not even need the impact gun

 

i read somewhere that a 50/50 mix of acetone and atf works better than anything on the market but ive never used it has anybody else?

 

i've always soaked my bolts a day prior to wrenching with PB blast.... never really had any problems... if the bolt is rusted up into the thread it'll break almost regardless.... so save some cursing and buy and easy out kit, or a drill bit set and a tap set... more pricey but worth it

 

Bumper bolts should have nut clips on them. when rusty the clip snaps and just spins.

In this situataion you can try to grab the remains of the nut clip with vise grips to remove it or just cut the damn thing off with a die grinder or dremel and replace it with a regular nut and bolt like I did.
This also eliminates those pesky large torx bolts and replaces them with regular hex head bolts.

 

It works from what I heard too but I'm not sure about the "best" status. The stuff i use works like a charm and better than PB. I was trying to get the clips off the u-joint caps and all they did was snap in pieces (first two) cuz they were rust-welded onto the cap (stock u-joints 92k miles later) so I sprayed the aero kroil on the remaining caps and what was left of the broken ones and waited 30 minutes. They came right off like butter. I was amazed. I never got this kind of result from PB unless i sprayed em for a week every other day. The only downside is you have to order it from the internet and it SMELLS very strong. A couple sprays consumed the entire garage plus it went through the laundry room and into the kitchen.

 

Something I like to do is wax and a torch. If the pb dosent work the wax will!

 

I'm not exactly sure how you 96 bumper caps bolt on but on, but I'll assume its similar to my 2001.

1) I don't want to assume anything else so lets start with the basics, you are holding the nut on the inside with a wrench or socket while taking off the bolt, right?

2) If the threads are stripped, try pulling the bolt out while turning it, maybe use a flat head screwdriver for leverage.

3) If all else fails you may be able to break the bolt or use a cut-off wheel to remove it and replace the nut and bolt later.

 

X2 on the screw driver trick. Most times you will have to start with a knife blade under the edge of the nut or bolt head. Once it gets started it will behave itself.

 

ok thanks guys ill try everything that you guys have suggested that i have not tried yet