What penetrating oil do you guys recommend? Will wax work better? Should I do both??

PB Blaster if you go the oil route.

Will one one these run a drill bit? I've got one in my drawer.

Die grinders spin 12,000 rpms plus, they don't make torque.. A drill spins 300-1800 rpms & torque is what makes it work... So no the die grinder isn't a good idea.... FWIW the welding a nut method does work great, I've done it a few times & I've done recessed bolts, I think yours is borderline to deep but if your good with a welder & don't have an angle drill I think I'd give that a shot.. If you weld on it getting a drill started straight is gonna be harder for sure... But if it works you'll be saved the PITA of drilling & ez-outting the bolt..

I guess I'll try welding a nut first. I've already been soaking it with some PB Blaster. I'll use a washer with a small hole so I don't hit the sides of the stud hole with wire. Then I'll weld a nut to it. I'll keep you posted. If I don't respond, it means I dumped the car in the river.

You might want to use at least a 1/4" washer so you can get some heat into the stud...

I always do the nutweld treatment too but I let it cool so it isn't oversized in the hole

Mitch

IT WORKED!!! I used a fender washer with a 3/16" hole. It welded real easy to the stud. Then I welded a 5/16" nut to it. By the time I filled the nut from the inside with weld, it was red hot. I waited until it wasn't red anymore, and it backed right out with a 1/2" wrench. I'm sure the PB Blaster had something to do with that. I sprayed about 3 coats of it on the broken stud over the course of a couple hours.

Thanks again for all the help guys. I appreciate it.

Attaboy, Luther!

I had no doubt it would work.

Good job!!!

Good Job Again!!!

Awesome!! Maybe what I see as borderline to deep isn't a problem...

There ya go!!!!
No drilling involved and another satisfied customer!!!