Leaking Rear Diff UPDATE: Found new axle

That's basically phosphoric acid.
Ospho is much less expensive but neither CONVERT rust to an inert Iron element like Magnetite or Iron Sulphate.

 

Fuck it, I'll get a gallon of corroseal and do it after the axle is swapped in. I'll just prep the metal while I have it all apart and off the truck. It actually says free delivery by tomorrow so we'll see.

 

Get the Undercoating gun with 360° wand extension and spray Coroseal inside the frame box sections

 

Wanted to post an update to this. My coworker and his brother both came over on sunday and helped me swap over the rear axle. Can't thank them enough, i believe they're members of TW but I don't know their usernames. Got everything done in a little over 4 hours. I just have to go back and do axle seals, orings, and breather cause according to him one is bad, but I don't see any leaks yet fingers crossed. My corroseal came and I have to go and get the axle cleaned up and painted with that stuff so it'll last longer.