I have all kinds of epoxy in my tool kit too but this is what I thought about and went nah:
- drain the remaining oil on the ground.
-setup camp, while the remaining oil seeps out. It'll take hours for the oil to slowly stop dripping.
-next morning, wake up, and use brake spray to clean the large crack, about 5", and there are smaller 1" long cracks too. Oh wait, I don't have a can of brake spray cleaner. It's too big to fit inside my ammo can of fluids.
-wire brush the crack to create a rough surface. I have a pneumatic die grinder which would be perfect, but can't run the engine for the air compressor

- I also have a welder but I don't think I have alum wire in the spool gun, but this may have been the better solution, maybe? Two batteries might've worked but three would've been better for my spool gun. Still, the work site has to be PRISTINE clean before any welding can begin.
-wait for hours for everything to set. 12 hours? Meanwhile you're praying that the oil from inside the pan isn't ruining the JB Weld bond.
-on the next day, come up with six quarts of fresh engine oil.
- if the epoxy holds, woohooo.
This thread can produce all kinds of learning points for us, so let me know how anyone else would've done things differently.