This info is taken from the winged warriors web site.
http://www.wwnboa.org/slaprer.htmAnother common problem they had on the assembly line was leaking at the front corner of the oil pan. Even though there is no pressure on the oil pan, they all seemed to leak. The fix was a little dumdum smeared across the oil pan seam on the outside. Dumdum was used for just about any leakage on the assembly line. The dumdum that was used on the body was always white and actually hardened with time. Engine dumdum was gray and always stayed soft.
Gary told us: "I've seen them dumdum brake hoses!"
James: "When I worked in Final Trim Repair, I went to the Metal shop and tore the vehicles down. They fixed the dents and whatever and they just take a scratchall and poke a hole in there and take that dent out and smear that white dumdum on there and shoot the paint, and away it goes.
Another of the guys shared this story: "I bought a Lil Red Express pickup from a dealership in Herman. Took it off the showroom and it squeaked so bad, they had to take the cab off and put all new bushings in it. I pulled into town one day and it was steaming. I pulled into the car wash, opened the hood and it has dumdum around the intake and it had been painted green. I don't know how long it was on there, but that gasket finally let go."
Gary: "They would do anything-dumdum was like duct tape, they used it for everything!"
