Dock anchor

I went through all the traditional methods before I tried pulling with the truck. I think its frozen in the spider gears too. I imagine it looks like one big ball of rust in there.
Hmmm,.....I would try filling the rear then w/the above solutions, Evaporust works quick, but doesn't cut well through grease, a penetrant like Howes oil or PB Blaster would be
better probably, Kerosene might help as a soak, molassas bath is slower but works.........fill 'er up!!