When I did my Ford 4000, I used gasket and non hardening RTV, color was blue. I did not do my oil pan in the shop, I did it in the field, 2 feet from the stump that hit the drain plug and started a leak when I was bush-hoggin in the wild I was clearing for pasture. It sat there for a week while I rounded up the parts. Laid a piece of cardboard under the tractor and went to work. Thats the bad news. Good new is I have no leaks. Our repairs are different. My challenge was the two front bolts with no clearance, that I had to cut off the heads to get them out, because the bolts were too long. Went back in fine with right length bolts. But that did tell me my tractor had received an out-of-frame rebuild. Those long bolts would only go in before the engine was set. Non-hardening RTV and gasket.